254191980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:308

約数の個数: 192

約数和(自身を含む): 846397440

約数和(自身を除く): 592205460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 60, 70, 79, 84, 94, 105, 140, 141, 158, 163, 188, 210, 235, 237, 282, 316, 326, 329, 395, 420, 470, 474, 489, 553, 564, 652, 658, 705, 790, 815, 940, 948, 978, 987, 1106, 1141, 1185, 1316, 1410, 1580, 1630, 1645, 1659, 1956, 1974, 2212, 2282, 2370, 2445, 2765, 2820, 3260, 3290, 3318, 3423, 3713, 3948, 4564, 4740, 4890, 4935, 5530, 5705, 6580, 6636, 6846, 7426, 7661, 8295, 9780, 9870, 11060, 11139, 11410, 12877, 13692, 14852, 15322, 16590, 17115, 18565, 19740, 22278, 22820, 22983, 25754, 25991, 30644, 33180, 34230, 37130, 38305, 38631, 44556, 45966, 51508, 51982, 53627, 55695, 64385, 68460, 74260, 76610, 77262, 77973, 90139, 91932, 103964, 107254, 111390, 114915, 128770, 129955, 153220, 154524, 155946, 160881, 180278, 193155, 214508, 222780, 229830, 257540, 259910, 268135, 270417, 311892, 321762, 360556, 386310, 389865, 450695, 459660, 519820, 536270, 540834, 605219, 643524, 772620, 779730, 804405, 901390, 1072540, 1081668, 1210438, 1352085, 1559460, 1608810, 1802780, 1815657, 2420876, 2704170, 3026095, 3217620, 3631314, 4236533, 5408340, 6052190, 7262628, 8473066, 9078285, 12104380, 12709599, 16946132, 18156570, 21182665, 25419198, 36313140, 42365330, 50838396, 63547995, 84730660, 127095990, 254191980]

約数ペア:

[(1, 254191980), (2, 127095990), (3, 84730660), (4, 63547995), (5, 50838396), (6, 42365330), (7, 36313140), (10, 25419198), (12, 21182665), (14, 18156570), (15, 16946132), (20, 12709599), (21, 12104380), (28, 9078285), (30, 8473066), (35, 7262628), (42, 6052190), (47, 5408340), (60, 4236533), (70, 3631314), (79, 3217620), (84, 3026095), (94, 2704170), (105, 2420876), (140, 1815657), (141, 1802780), (158, 1608810), (163, 1559460), (188, 1352085), (210, 1210438), (235, 1081668), (237, 1072540), (282, 901390), (316, 804405), (326, 779730), (329, 772620), (395, 643524), (420, 605219), (470, 540834), (474, 536270), (489, 519820), (553, 459660), (564, 450695), (652, 389865), (658, 386310), (705, 360556), (790, 321762), (815, 311892), (940, 270417), (948, 268135), (978, 259910), (987, 257540), (1106, 229830), (1141, 222780), (1185, 214508), (1316, 193155), (1410, 180278), (1580, 160881), (1630, 155946), (1645, 154524), (1659, 153220), (1956, 129955), (1974, 128770), (2212, 114915), (2282, 111390), (2370, 107254), (2445, 103964), (2765, 91932), (2820, 90139), (3260, 77973), (3290, 77262), (3318, 76610), (3423, 74260), (3713, 68460), (3948, 64385), (4564, 55695), (4740, 53627), (4890, 51982), (4935, 51508), (5530, 45966), (5705, 44556), (6580, 38631), (6636, 38305), (6846, 37130), (7426, 34230), (7661, 33180), (8295, 30644), (9780, 25991), (9870, 25754), (11060, 22983), (11139, 22820), (11410, 22278), (12877, 19740), (13692, 18565), (14852, 17115), (15322, 16590)]