81254960

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:430

約数の個数: 80

約数和(自身を含む): 196716576

約数和(自身を除く): 115461616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 97, 148, 185, 194, 283, 296, 370, 388, 485, 566, 592, 740, 776, 970, 1132, 1415, 1480, 1552, 1940, 2264, 2830, 2960, 3589, 3880, 4528, 5660, 7178, 7760, 10471, 11320, 14356, 17945, 20942, 22640, 27451, 28712, 35890, 41884, 52355, 54902, 57424, 71780, 83768, 104710, 109804, 137255, 143560, 167536, 209420, 219608, 274510, 287120, 418840, 439216, 549020, 837680, 1015687, 1098040, 2031374, 2196080, 4062748, 5078435, 8125496, 10156870, 16250992, 20313740, 40627480, 81254960]

約数ペア:

[(1, 81254960), (2, 40627480), (4, 20313740), (5, 16250992), (8, 10156870), (10, 8125496), (16, 5078435), (20, 4062748), (37, 2196080), (40, 2031374), (74, 1098040), (80, 1015687), (97, 837680), (148, 549020), (185, 439216), (194, 418840), (283, 287120), (296, 274510), (370, 219608), (388, 209420), (485, 167536), (566, 143560), (592, 137255), (740, 109804), (776, 104710), (970, 83768), (1132, 71780), (1415, 57424), (1480, 54902), (1552, 52355), (1940, 41884), (2264, 35890), (2830, 28712), (2960, 27451), (3589, 22640), (3880, 20942), (4528, 17945), (5660, 14356), (7178, 11320), (7760, 10471)]