21417708

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 55339200

約数和(自身を除く): 33921492

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 59, 78, 118, 156, 169, 177, 179, 236, 338, 354, 358, 507, 537, 676, 708, 716, 767, 1014, 1074, 1534, 2028, 2148, 2301, 2327, 3068, 4602, 4654, 6981, 9204, 9308, 9971, 10561, 13962, 19942, 21122, 27924, 29913, 30251, 31683, 39884, 42244, 59826, 60502, 63366, 90753, 119652, 121004, 126732, 137293, 181506, 274586, 363012, 411879, 549172, 823758, 1647516, 1784809, 3569618, 5354427, 7139236, 10708854, 21417708]

約数ペア:

[(1, 21417708), (2, 10708854), (3, 7139236), (4, 5354427), (6, 3569618), (12, 1784809), (13, 1647516), (26, 823758), (39, 549172), (52, 411879), (59, 363012), (78, 274586), (118, 181506), (156, 137293), (169, 126732), (177, 121004), (179, 119652), (236, 90753), (338, 63366), (354, 60502), (358, 59826), (507, 42244), (537, 39884), (676, 31683), (708, 30251), (716, 29913), (767, 27924), (1014, 21122), (1074, 19942), (1534, 13962), (2028, 10561), (2148, 9971), (2301, 9308), (2327, 9204), (3068, 6981), (4602, 4654)]