20367760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{983}}^1$

素因数の和:1040

約数の個数: 80

約数和(自身を含む): 55639296

約数和(自身を除く): 35271536

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 80, 112, 140, 148, 185, 259, 280, 296, 370, 518, 560, 592, 740, 983, 1036, 1295, 1480, 1966, 2072, 2590, 2960, 3932, 4144, 4915, 5180, 6881, 7864, 9830, 10360, 13762, 15728, 19660, 20720, 27524, 34405, 36371, 39320, 55048, 68810, 72742, 78640, 110096, 137620, 145484, 181855, 254597, 275240, 290968, 363710, 509194, 550480, 581936, 727420, 1018388, 1272985, 1454840, 2036776, 2545970, 2909680, 4073552, 5091940, 10183880, 20367760]

約数ペア:

[(1, 20367760), (2, 10183880), (4, 5091940), (5, 4073552), (7, 2909680), (8, 2545970), (10, 2036776), (14, 1454840), (16, 1272985), (20, 1018388), (28, 727420), (35, 581936), (37, 550480), (40, 509194), (56, 363710), (70, 290968), (74, 275240), (80, 254597), (112, 181855), (140, 145484), (148, 137620), (185, 110096), (259, 78640), (280, 72742), (296, 68810), (370, 55048), (518, 39320), (560, 36371), (592, 34405), (740, 27524), (983, 20720), (1036, 19660), (1295, 15728), (1480, 13762), (1966, 10360), (2072, 9830), (2590, 7864), (2960, 6881), (3932, 5180), (4144, 4915)]