21299460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:162

約数の個数: 192

約数和(自身を含む): 75866112

約数和(自身を除く): 54566652

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 47, 52, 60, 65, 70, 78, 83, 84, 91, 94, 105, 130, 140, 141, 156, 166, 182, 188, 195, 210, 235, 249, 260, 273, 282, 329, 332, 364, 390, 415, 420, 455, 470, 498, 546, 564, 581, 611, 658, 705, 780, 830, 910, 940, 987, 996, 1079, 1092, 1162, 1222, 1245, 1316, 1365, 1410, 1645, 1660, 1743, 1820, 1833, 1974, 2158, 2324, 2444, 2490, 2730, 2820, 2905, 3055, 3237, 3290, 3486, 3666, 3901, 3948, 4277, 4316, 4935, 4980, 5395, 5460, 5810, 6110, 6474, 6580, 6972, 7332, 7553, 7802, 8554, 8715, 9165, 9870, 10790, 11620, 11703, 12220, 12831, 12948, 15106, 15604, 16185, 17108, 17430, 18330, 19505, 19740, 21385, 21580, 22659, 23406, 25662, 27307, 30212, 32370, 34860, 36660, 37765, 39010, 42770, 45318, 46812, 50713, 51324, 54614, 58515, 64155, 64740, 75530, 78020, 81921, 85540, 90636, 101426, 109228, 113295, 117030, 128310, 136535, 151060, 152139, 163842, 202852, 226590, 234060, 253565, 256620, 273070, 304278, 327684, 354991, 409605, 453180, 507130, 546140, 608556, 709982, 760695, 819210, 1014260, 1064973, 1419964, 1521390, 1638420, 1774955, 2129946, 3042780, 3549910, 4259892, 5324865, 7099820, 10649730, 21299460]

約数ペア:

[(1, 21299460), (2, 10649730), (3, 7099820), (4, 5324865), (5, 4259892), (6, 3549910), (7, 3042780), (10, 2129946), (12, 1774955), (13, 1638420), (14, 1521390), (15, 1419964), (20, 1064973), (21, 1014260), (26, 819210), (28, 760695), (30, 709982), (35, 608556), (39, 546140), (42, 507130), (47, 453180), (52, 409605), (60, 354991), (65, 327684), (70, 304278), (78, 273070), (83, 256620), (84, 253565), (91, 234060), (94, 226590), (105, 202852), (130, 163842), (140, 152139), (141, 151060), (156, 136535), (166, 128310), (182, 117030), (188, 113295), (195, 109228), (210, 101426), (235, 90636), (249, 85540), (260, 81921), (273, 78020), (282, 75530), (329, 64740), (332, 64155), (364, 58515), (390, 54614), (415, 51324), (420, 50713), (455, 46812), (470, 45318), (498, 42770), (546, 39010), (564, 37765), (581, 36660), (611, 34860), (658, 32370), (705, 30212), (780, 27307), (830, 25662), (910, 23406), (940, 22659), (987, 21580), (996, 21385), (1079, 19740), (1092, 19505), (1162, 18330), (1222, 17430), (1245, 17108), (1316, 16185), (1365, 15604), (1410, 15106), (1645, 12948), (1660, 12831), (1743, 12220), (1820, 11703), (1833, 11620), (1974, 10790), (2158, 9870), (2324, 9165), (2444, 8715), (2490, 8554), (2730, 7802), (2820, 7553), (2905, 7332), (3055, 6972), (3237, 6580), (3290, 6474), (3486, 6110), (3666, 5810), (3901, 5460), (3948, 5395), (4277, 4980), (4316, 4935)]