64991840

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6659}}^1$

素因数の和:6735

約数の個数: 48

約数和(自身を含む): 156083760

約数和(自身を除く): 91091920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2440, 4880, 6659, 9760, 13318, 26636, 33295, 53272, 66590, 106544, 133180, 213088, 266360, 406199, 532720, 812398, 1065440, 1624796, 2030995, 3249592, 4061990, 6499184, 8123980, 12998368, 16247960, 32495920, 64991840]

約数ペア:

[(1, 64991840), (2, 32495920), (4, 16247960), (5, 12998368), (8, 8123980), (10, 6499184), (16, 4061990), (20, 3249592), (32, 2030995), (40, 1624796), (61, 1065440), (80, 812398), (122, 532720), (160, 406199), (244, 266360), (305, 213088), (488, 133180), (610, 106544), (976, 66590), (1220, 53272), (1952, 33295), (2440, 26636), (4880, 13318), (6659, 9760)]