81594620

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{1553}}^1$

素因数の和:1670

約数の個数: 48

約数和(自身を含む): 178573248

約数和(自身を除く): 96978628

約数列:

[1, 2, 4, 5, 10, 20, 37, 71, 74, 142, 148, 185, 284, 355, 370, 710, 740, 1420, 1553, 2627, 3106, 5254, 6212, 7765, 10508, 13135, 15530, 26270, 31060, 52540, 57461, 110263, 114922, 220526, 229844, 287305, 441052, 551315, 574610, 1102630, 1149220, 2205260, 4079731, 8159462, 16318924, 20398655, 40797310, 81594620]

約数ペア:

[(1, 81594620), (2, 40797310), (4, 20398655), (5, 16318924), (10, 8159462), (20, 4079731), (37, 2205260), (71, 1149220), (74, 1102630), (142, 574610), (148, 551315), (185, 441052), (284, 287305), (355, 229844), (370, 220526), (710, 114922), (740, 110263), (1420, 57461), (1553, 52540), (2627, 31060), (3106, 26270), (5254, 15530), (6212, 13135), (7765, 10508)]