25586920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 61300800

約数和(自身を除く): 35713880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 131, 152, 190, 257, 262, 380, 514, 524, 655, 760, 1028, 1048, 1285, 1310, 2056, 2489, 2570, 2620, 4883, 4978, 5140, 5240, 9766, 9956, 10280, 12445, 19532, 19912, 24415, 24890, 33667, 39064, 48830, 49780, 67334, 97660, 99560, 134668, 168335, 195320, 269336, 336670, 639673, 673340, 1279346, 1346680, 2558692, 3198365, 5117384, 6396730, 12793460, 25586920]

約数ペア:

[(1, 25586920), (2, 12793460), (4, 6396730), (5, 5117384), (8, 3198365), (10, 2558692), (19, 1346680), (20, 1279346), (38, 673340), (40, 639673), (76, 336670), (95, 269336), (131, 195320), (152, 168335), (190, 134668), (257, 99560), (262, 97660), (380, 67334), (514, 49780), (524, 48830), (655, 39064), (760, 33667), (1028, 24890), (1048, 24415), (1285, 19912), (1310, 19532), (2056, 12445), (2489, 10280), (2570, 9956), (2620, 9766), (4883, 5240), (4978, 5140)]