18702939280

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{23689}}^1$

素因数の和:23912

約数の個数: 80

約数和(自身を含む): 44415907200

約数和(自身を除く): 25712967920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 139, 142, 278, 284, 355, 556, 568, 695, 710, 1112, 1136, 1390, 1420, 2224, 2780, 2840, 5560, 5680, 9869, 11120, 19738, 23689, 39476, 47378, 49345, 78952, 94756, 98690, 118445, 157904, 189512, 197380, 236890, 379024, 394760, 473780, 789520, 947560, 1681919, 1895120, 3292771, 3363838, 6585542, 6727676, 8409595, 13171084, 13455352, 16463855, 16819190, 26342168, 26910704, 32927710, 33638380, 52684336, 65855420, 67276760, 131710840, 134553520, 233786741, 263421680, 467573482, 935146964, 1168933705, 1870293928, 2337867410, 3740587856, 4675734820, 9351469640, 18702939280]

約数ペア:

[(1, 18702939280), (2, 9351469640), (4, 4675734820), (5, 3740587856), (8, 2337867410), (10, 1870293928), (16, 1168933705), (20, 935146964), (40, 467573482), (71, 263421680), (80, 233786741), (139, 134553520), (142, 131710840), (278, 67276760), (284, 65855420), (355, 52684336), (556, 33638380), (568, 32927710), (695, 26910704), (710, 26342168), (1112, 16819190), (1136, 16463855), (1390, 13455352), (1420, 13171084), (2224, 8409595), (2780, 6727676), (2840, 6585542), (5560, 3363838), (5680, 3292771), (9869, 1895120), (11120, 1681919), (19738, 947560), (23689, 789520), (39476, 473780), (47378, 394760), (49345, 379024), (78952, 236890), (94756, 197380), (98690, 189512), (118445, 157904)]