81664260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^2$

素因数の和:170

約数の個数: 144

約数和(自身を含む): 256991616

約数和(自身を除く): 175327356

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 30, 34, 46, 51, 59, 60, 68, 69, 85, 92, 102, 115, 118, 138, 170, 177, 204, 230, 236, 255, 276, 295, 340, 345, 354, 391, 460, 510, 590, 690, 708, 782, 885, 1003, 1020, 1173, 1180, 1357, 1380, 1564, 1770, 1955, 2006, 2346, 2714, 3009, 3481, 3540, 3910, 4012, 4071, 4692, 5015, 5428, 5865, 6018, 6785, 6962, 7820, 8142, 10030, 10443, 11730, 12036, 13570, 13924, 15045, 16284, 17405, 20060, 20355, 20886, 23069, 23460, 27140, 30090, 34810, 40710, 41772, 46138, 52215, 59177, 60180, 69207, 69620, 80063, 81420, 92276, 104430, 115345, 118354, 138414, 160126, 177531, 208860, 230690, 236708, 240189, 276828, 295885, 320252, 346035, 355062, 400315, 461380, 480378, 591770, 692070, 710124, 800630, 887655, 960756, 1183540, 1200945, 1361071, 1384140, 1601260, 1775310, 2401890, 2722142, 3550620, 4083213, 4803780, 5444284, 6805355, 8166426, 13610710, 16332852, 20416065, 27221420, 40832130, 81664260]

約数ペア:

[(1, 81664260), (2, 40832130), (3, 27221420), (4, 20416065), (5, 16332852), (6, 13610710), (10, 8166426), (12, 6805355), (15, 5444284), (17, 4803780), (20, 4083213), (23, 3550620), (30, 2722142), (34, 2401890), (46, 1775310), (51, 1601260), (59, 1384140), (60, 1361071), (68, 1200945), (69, 1183540), (85, 960756), (92, 887655), (102, 800630), (115, 710124), (118, 692070), (138, 591770), (170, 480378), (177, 461380), (204, 400315), (230, 355062), (236, 346035), (255, 320252), (276, 295885), (295, 276828), (340, 240189), (345, 236708), (354, 230690), (391, 208860), (460, 177531), (510, 160126), (590, 138414), (690, 118354), (708, 115345), (782, 104430), (885, 92276), (1003, 81420), (1020, 80063), (1173, 69620), (1180, 69207), (1357, 60180), (1380, 59177), (1564, 52215), (1770, 46138), (1955, 41772), (2006, 40710), (2346, 34810), (2714, 30090), (3009, 27140), (3481, 23460), (3540, 23069), (3910, 20886), (4012, 20355), (4071, 20060), (4692, 17405), (5015, 16284), (5428, 15045), (5865, 13924), (6018, 13570), (6785, 12036), (6962, 11730), (7820, 10443), (8142, 10030)]