25519280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:298

約数の個数: 80

約数和(自身を含む): 63448320

約数和(自身を除く): 37929040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 103, 152, 163, 190, 206, 304, 326, 380, 412, 515, 652, 760, 815, 824, 1030, 1304, 1520, 1630, 1648, 1957, 2060, 2608, 3097, 3260, 3914, 4120, 6194, 6520, 7828, 8240, 9785, 12388, 13040, 15485, 15656, 16789, 19570, 24776, 30970, 31312, 33578, 39140, 49552, 61940, 67156, 78280, 83945, 123880, 134312, 156560, 167890, 247760, 268624, 318991, 335780, 637982, 671560, 1275964, 1343120, 1594955, 2551928, 3189910, 5103856, 6379820, 12759640, 25519280]

約数ペア:

[(1, 25519280), (2, 12759640), (4, 6379820), (5, 5103856), (8, 3189910), (10, 2551928), (16, 1594955), (19, 1343120), (20, 1275964), (38, 671560), (40, 637982), (76, 335780), (80, 318991), (95, 268624), (103, 247760), (152, 167890), (163, 156560), (190, 134312), (206, 123880), (304, 83945), (326, 78280), (380, 67156), (412, 61940), (515, 49552), (652, 39140), (760, 33578), (815, 31312), (824, 30970), (1030, 24776), (1304, 19570), (1520, 16789), (1630, 15656), (1648, 15485), (1957, 13040), (2060, 12388), (2608, 9785), (3097, 8240), (3260, 7828), (3914, 6520), (4120, 6194)]