258295280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{739}}^1$

素因数の和:1026

約数の個数: 80

約数和(自身を含む): 639200160

約数和(自身を除く): 380904880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 257, 272, 340, 514, 680, 739, 1028, 1285, 1360, 1478, 2056, 2570, 2956, 3695, 4112, 4369, 5140, 5912, 7390, 8738, 10280, 11824, 12563, 14780, 17476, 20560, 21845, 25126, 29560, 34952, 43690, 50252, 59120, 62815, 69904, 87380, 100504, 125630, 174760, 189923, 201008, 251260, 349520, 379846, 502520, 759692, 949615, 1005040, 1519384, 1899230, 3038768, 3228691, 3798460, 6457382, 7596920, 12914764, 15193840, 16143455, 25829528, 32286910, 51659056, 64573820, 129147640, 258295280]

約数ペア:

[(1, 258295280), (2, 129147640), (4, 64573820), (5, 51659056), (8, 32286910), (10, 25829528), (16, 16143455), (17, 15193840), (20, 12914764), (34, 7596920), (40, 6457382), (68, 3798460), (80, 3228691), (85, 3038768), (136, 1899230), (170, 1519384), (257, 1005040), (272, 949615), (340, 759692), (514, 502520), (680, 379846), (739, 349520), (1028, 251260), (1285, 201008), (1360, 189923), (1478, 174760), (2056, 125630), (2570, 100504), (2956, 87380), (3695, 69904), (4112, 62815), (4369, 59120), (5140, 50252), (5912, 43690), (7390, 34952), (8738, 29560), (10280, 25126), (11824, 21845), (12563, 20560), (14780, 17476)]