87181990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{821}}^1$

素因数の和:913

約数の個数: 64

約数和(自身を含む): 188915328

約数和(自身を除く): 101733338

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 41, 70, 74, 82, 185, 205, 259, 287, 370, 410, 518, 574, 821, 1295, 1435, 1517, 1642, 2590, 2870, 3034, 4105, 5747, 7585, 8210, 10619, 11494, 15170, 21238, 28735, 30377, 33661, 53095, 57470, 60754, 67322, 106190, 151885, 168305, 212639, 235627, 303770, 336610, 425278, 471254, 1063195, 1178135, 1245457, 2126390, 2356270, 2490914, 6227285, 8718199, 12454570, 17436398, 43590995, 87181990]

約数ペア:

[(1, 87181990), (2, 43590995), (5, 17436398), (7, 12454570), (10, 8718199), (14, 6227285), (35, 2490914), (37, 2356270), (41, 2126390), (70, 1245457), (74, 1178135), (82, 1063195), (185, 471254), (205, 425278), (259, 336610), (287, 303770), (370, 235627), (410, 212639), (518, 168305), (574, 151885), (821, 106190), (1295, 67322), (1435, 60754), (1517, 57470), (1642, 53095), (2590, 33661), (2870, 30377), (3034, 28735), (4105, 21238), (5747, 15170), (7585, 11494), (8210, 10619)]