18930660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:210

約数の個数: 144

約数和(自身を含む): 63431424

約数和(自身を除く): 44500764

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 49, 60, 70, 84, 94, 98, 105, 137, 140, 141, 147, 188, 196, 210, 235, 245, 274, 282, 294, 329, 411, 420, 470, 490, 548, 564, 588, 658, 685, 705, 735, 822, 940, 959, 980, 987, 1316, 1370, 1410, 1470, 1644, 1645, 1918, 1974, 2055, 2303, 2740, 2820, 2877, 2940, 3290, 3836, 3948, 4110, 4606, 4795, 4935, 5754, 6439, 6580, 6713, 6909, 8220, 9212, 9590, 9870, 11508, 11515, 12878, 13426, 13818, 14385, 19180, 19317, 19740, 20139, 23030, 25756, 26852, 27636, 28770, 32195, 33565, 34545, 38634, 40278, 45073, 46060, 57540, 64390, 67130, 69090, 77268, 80556, 90146, 96585, 100695, 128780, 134260, 135219, 138180, 180292, 193170, 201390, 225365, 270438, 315511, 386340, 402780, 450730, 540876, 631022, 676095, 901460, 946533, 1262044, 1352190, 1577555, 1893066, 2704380, 3155110, 3786132, 4732665, 6310220, 9465330, 18930660]

約数ペア:

[(1, 18930660), (2, 9465330), (3, 6310220), (4, 4732665), (5, 3786132), (6, 3155110), (7, 2704380), (10, 1893066), (12, 1577555), (14, 1352190), (15, 1262044), (20, 946533), (21, 901460), (28, 676095), (30, 631022), (35, 540876), (42, 450730), (47, 402780), (49, 386340), (60, 315511), (70, 270438), (84, 225365), (94, 201390), (98, 193170), (105, 180292), (137, 138180), (140, 135219), (141, 134260), (147, 128780), (188, 100695), (196, 96585), (210, 90146), (235, 80556), (245, 77268), (274, 69090), (282, 67130), (294, 64390), (329, 57540), (411, 46060), (420, 45073), (470, 40278), (490, 38634), (548, 34545), (564, 33565), (588, 32195), (658, 28770), (685, 27636), (705, 26852), (735, 25756), (822, 23030), (940, 20139), (959, 19740), (980, 19317), (987, 19180), (1316, 14385), (1370, 13818), (1410, 13426), (1470, 12878), (1644, 11515), (1645, 11508), (1918, 9870), (1974, 9590), (2055, 9212), (2303, 8220), (2740, 6909), (2820, 6713), (2877, 6580), (2940, 6439), (3290, 5754), (3836, 4935), (3948, 4795), (4110, 4606)]