201551320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 503807040

約数和(自身を除く): 302255720

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 43, 61, 68, 85, 86, 113, 122, 136, 170, 172, 215, 226, 244, 305, 340, 344, 430, 452, 488, 565, 610, 680, 731, 860, 904, 1037, 1130, 1220, 1462, 1720, 1921, 2074, 2260, 2440, 2623, 2924, 3655, 3842, 4148, 4520, 4859, 5185, 5246, 5848, 6893, 7310, 7684, 8296, 9605, 9718, 10370, 10492, 13115, 13786, 14620, 15368, 19210, 19436, 20740, 20984, 24295, 26230, 27572, 29240, 34465, 38420, 38872, 41480, 44591, 48590, 52460, 55144, 68930, 76840, 82603, 89182, 97180, 104920, 117181, 137860, 165206, 178364, 194360, 222955, 234362, 275720, 296399, 330412, 356728, 413015, 445910, 468724, 585905, 592798, 660824, 826030, 891820, 937448, 1171810, 1185596, 1481995, 1652060, 1783640, 2343620, 2371192, 2963990, 3304120, 4687240, 5038783, 5927980, 10077566, 11855960, 20155132, 25193915, 40310264, 50387830, 100775660, 201551320]

約数ペア:

[(1, 201551320), (2, 100775660), (4, 50387830), (5, 40310264), (8, 25193915), (10, 20155132), (17, 11855960), (20, 10077566), (34, 5927980), (40, 5038783), (43, 4687240), (61, 3304120), (68, 2963990), (85, 2371192), (86, 2343620), (113, 1783640), (122, 1652060), (136, 1481995), (170, 1185596), (172, 1171810), (215, 937448), (226, 891820), (244, 826030), (305, 660824), (340, 592798), (344, 585905), (430, 468724), (452, 445910), (488, 413015), (565, 356728), (610, 330412), (680, 296399), (731, 275720), (860, 234362), (904, 222955), (1037, 194360), (1130, 178364), (1220, 165206), (1462, 137860), (1720, 117181), (1921, 104920), (2074, 97180), (2260, 89182), (2440, 82603), (2623, 76840), (2924, 68930), (3655, 55144), (3842, 52460), (4148, 48590), (4520, 44591), (4859, 41480), (5185, 38872), (5246, 38420), (5848, 34465), (6893, 29240), (7310, 27572), (7684, 26230), (8296, 24295), (9605, 20984), (9718, 20740), (10370, 19436), (10492, 19210), (13115, 15368), (13786, 14620)]