20668565560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{449}}^1\times {\mathrm{1637}}^1$

素因数の和:2153

約数の個数: 128

約数和(自身を含む): 50417640000

約数和(自身を除く): 29749074440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 74, 76, 95, 148, 152, 185, 190, 296, 370, 380, 449, 703, 740, 760, 898, 1406, 1480, 1637, 1796, 2245, 2812, 3274, 3515, 3592, 4490, 5624, 6548, 7030, 8185, 8531, 8980, 13096, 14060, 16370, 16613, 17062, 17960, 28120, 31103, 32740, 33226, 34124, 42655, 60569, 62206, 65480, 66452, 68248, 83065, 85310, 121138, 124412, 132904, 155515, 166130, 170620, 242276, 248824, 302845, 311030, 315647, 332260, 341240, 484552, 605690, 622060, 631294, 664520, 735013, 1150811, 1211380, 1244120, 1262588, 1470026, 1578235, 2301622, 2422760, 2525176, 2940052, 3156470, 3675065, 4603244, 5754055, 5880104, 6312940, 7350130, 9206488, 11508110, 12625880, 13965247, 14700260, 23016220, 27195481, 27930494, 29400520, 46032440, 54390962, 55860988, 69826235, 108781924, 111721976, 135977405, 139652470, 217563848, 271954810, 279304940, 516714139, 543909620, 558609880, 1033428278, 1087819240, 2066856556, 2583570695, 4133713112, 5167141390, 10334282780, 20668565560]

約数ペア:

[(1, 20668565560), (2, 10334282780), (4, 5167141390), (5, 4133713112), (8, 2583570695), (10, 2066856556), (19, 1087819240), (20, 1033428278), (37, 558609880), (38, 543909620), (40, 516714139), (74, 279304940), (76, 271954810), (95, 217563848), (148, 139652470), (152, 135977405), (185, 111721976), (190, 108781924), (296, 69826235), (370, 55860988), (380, 54390962), (449, 46032440), (703, 29400520), (740, 27930494), (760, 27195481), (898, 23016220), (1406, 14700260), (1480, 13965247), (1637, 12625880), (1796, 11508110), (2245, 9206488), (2812, 7350130), (3274, 6312940), (3515, 5880104), (3592, 5754055), (4490, 4603244), (5624, 3675065), (6548, 3156470), (7030, 2940052), (8185, 2525176), (8531, 2422760), (8980, 2301622), (13096, 1578235), (14060, 1470026), (16370, 1262588), (16613, 1244120), (17062, 1211380), (17960, 1150811), (28120, 735013), (31103, 664520), (32740, 631294), (33226, 622060), (34124, 605690), (42655, 484552), (60569, 341240), (62206, 332260), (65480, 315647), (66452, 311030), (68248, 302845), (83065, 248824), (85310, 242276), (121138, 170620), (124412, 166130), (132904, 155515)]