20099504080

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{62297}}^1$

素因数の和:62456

約数の個数: 80

約数和(自身を含む): 48435449040

約数和(自身を除く): 28335944960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 109, 148, 185, 218, 296, 370, 436, 545, 592, 740, 872, 1090, 1480, 1744, 2180, 2960, 4033, 4360, 8066, 8720, 16132, 20165, 32264, 40330, 62297, 64528, 80660, 124594, 161320, 249188, 311485, 322640, 498376, 622970, 996752, 1245940, 2304989, 2491880, 4609978, 4983760, 6790373, 9219956, 11524945, 13580746, 18439912, 23049890, 27161492, 33951865, 36879824, 46099780, 54322984, 67903730, 92199560, 108645968, 135807460, 184399120, 251243801, 271614920, 502487602, 543229840, 1004975204, 1256219005, 2009950408, 2512438010, 4019900816, 5024876020, 10049752040, 20099504080]

約数ペア:

[(1, 20099504080), (2, 10049752040), (4, 5024876020), (5, 4019900816), (8, 2512438010), (10, 2009950408), (16, 1256219005), (20, 1004975204), (37, 543229840), (40, 502487602), (74, 271614920), (80, 251243801), (109, 184399120), (148, 135807460), (185, 108645968), (218, 92199560), (296, 67903730), (370, 54322984), (436, 46099780), (545, 36879824), (592, 33951865), (740, 27161492), (872, 23049890), (1090, 18439912), (1480, 13580746), (1744, 11524945), (2180, 9219956), (2960, 6790373), (4033, 4983760), (4360, 4609978), (8066, 2491880), (8720, 2304989), (16132, 1245940), (20165, 996752), (32264, 622970), (40330, 498376), (62297, 322640), (64528, 311485), (80660, 249188), (124594, 161320)]