21276540

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:121

約数の個数: 144

約数和(自身を含む): 70066080

約数和(自身を除く): 48789540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 41, 45, 54, 60, 62, 82, 90, 93, 108, 123, 124, 135, 155, 164, 180, 186, 205, 246, 270, 279, 310, 369, 372, 410, 465, 492, 540, 558, 615, 620, 738, 820, 837, 930, 961, 1107, 1116, 1230, 1271, 1395, 1476, 1674, 1845, 1860, 1922, 2214, 2460, 2542, 2790, 2883, 3348, 3690, 3813, 3844, 4185, 4428, 4805, 5084, 5535, 5580, 5766, 6355, 7380, 7626, 8370, 8649, 9610, 11070, 11439, 11532, 12710, 14415, 15252, 16740, 17298, 19065, 19220, 22140, 22878, 25420, 25947, 28830, 34317, 34596, 38130, 39401, 43245, 45756, 51894, 57195, 57660, 68634, 76260, 78802, 86490, 103788, 114390, 118203, 129735, 137268, 157604, 171585, 172980, 197005, 228780, 236406, 259470, 343170, 354609, 394010, 472812, 518940, 591015, 686340, 709218, 788020, 1063827, 1182030, 1418436, 1773045, 2127654, 2364060, 3546090, 4255308, 5319135, 7092180, 10638270, 21276540]

約数ペア:

[(1, 21276540), (2, 10638270), (3, 7092180), (4, 5319135), (5, 4255308), (6, 3546090), (9, 2364060), (10, 2127654), (12, 1773045), (15, 1418436), (18, 1182030), (20, 1063827), (27, 788020), (30, 709218), (31, 686340), (36, 591015), (41, 518940), (45, 472812), (54, 394010), (60, 354609), (62, 343170), (82, 259470), (90, 236406), (93, 228780), (108, 197005), (123, 172980), (124, 171585), (135, 157604), (155, 137268), (164, 129735), (180, 118203), (186, 114390), (205, 103788), (246, 86490), (270, 78802), (279, 76260), (310, 68634), (369, 57660), (372, 57195), (410, 51894), (465, 45756), (492, 43245), (540, 39401), (558, 38130), (615, 34596), (620, 34317), (738, 28830), (820, 25947), (837, 25420), (930, 22878), (961, 22140), (1107, 19220), (1116, 19065), (1230, 17298), (1271, 16740), (1395, 15252), (1476, 14415), (1674, 12710), (1845, 11532), (1860, 11439), (1922, 11070), (2214, 9610), (2460, 8649), (2542, 8370), (2790, 7626), (2883, 7380), (3348, 6355), (3690, 5766), (3813, 5580), (3844, 5535), (4185, 5084), (4428, 4805)]