321918260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^2\times {\mathrm{103}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 714674688

約数和(自身を除く): 392756428

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 103, 124, 142, 155, 206, 284, 310, 355, 412, 515, 620, 710, 1030, 1420, 2060, 2201, 3193, 4402, 5041, 6386, 7313, 8804, 10082, 11005, 12772, 14626, 15965, 20164, 22010, 25205, 29252, 31930, 36565, 44020, 50410, 63860, 73130, 100820, 146260, 156271, 226703, 312542, 453406, 519223, 625084, 781355, 906812, 1038446, 1133515, 1562710, 2076892, 2267030, 2596115, 3125420, 4534060, 5192230, 10384460, 16095913, 32191826, 64383652, 80479565, 160959130, 321918260]

約数ペア:

[(1, 321918260), (2, 160959130), (4, 80479565), (5, 64383652), (10, 32191826), (20, 16095913), (31, 10384460), (62, 5192230), (71, 4534060), (103, 3125420), (124, 2596115), (142, 2267030), (155, 2076892), (206, 1562710), (284, 1133515), (310, 1038446), (355, 906812), (412, 781355), (515, 625084), (620, 519223), (710, 453406), (1030, 312542), (1420, 226703), (2060, 156271), (2201, 146260), (3193, 100820), (4402, 73130), (5041, 63860), (6386, 50410), (7313, 44020), (8804, 36565), (10082, 31930), (11005, 29252), (12772, 25205), (14626, 22010), (15965, 20164)]