20258940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1367}}^1$

素因数の和:1411

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 44091780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 76, 78, 95, 114, 130, 156, 190, 195, 228, 247, 260, 285, 380, 390, 494, 570, 741, 780, 988, 1140, 1235, 1367, 1482, 2470, 2734, 2964, 3705, 4101, 4940, 5468, 6835, 7410, 8202, 13670, 14820, 16404, 17771, 20505, 25973, 27340, 35542, 41010, 51946, 53313, 71084, 77919, 82020, 88855, 103892, 106626, 129865, 155838, 177710, 213252, 259730, 266565, 311676, 337649, 355420, 389595, 519460, 533130, 675298, 779190, 1012947, 1066260, 1350596, 1558380, 1688245, 2025894, 3376490, 4051788, 5064735, 6752980, 10129470, 20258940]

約数ペア:

[(1, 20258940), (2, 10129470), (3, 6752980), (4, 5064735), (5, 4051788), (6, 3376490), (10, 2025894), (12, 1688245), (13, 1558380), (15, 1350596), (19, 1066260), (20, 1012947), (26, 779190), (30, 675298), (38, 533130), (39, 519460), (52, 389595), (57, 355420), (60, 337649), (65, 311676), (76, 266565), (78, 259730), (95, 213252), (114, 177710), (130, 155838), (156, 129865), (190, 106626), (195, 103892), (228, 88855), (247, 82020), (260, 77919), (285, 71084), (380, 53313), (390, 51946), (494, 41010), (570, 35542), (741, 27340), (780, 25973), (988, 20505), (1140, 17771), (1235, 16404), (1367, 14820), (1482, 13670), (2470, 8202), (2734, 7410), (2964, 6835), (3705, 5468), (4101, 4940)]