19959160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 48898080

約数和(自身を除く): 28938920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 131, 260, 262, 293, 520, 524, 586, 655, 1048, 1172, 1310, 1465, 1703, 2344, 2620, 2930, 3406, 3809, 5240, 5860, 6812, 7618, 8515, 11720, 13624, 15236, 17030, 19045, 30472, 34060, 38090, 38383, 68120, 76180, 76766, 152360, 153532, 191915, 307064, 383830, 498979, 767660, 997958, 1535320, 1995916, 2494895, 3991832, 4989790, 9979580, 19959160]

約数ペア:

[(1, 19959160), (2, 9979580), (4, 4989790), (5, 3991832), (8, 2494895), (10, 1995916), (13, 1535320), (20, 997958), (26, 767660), (40, 498979), (52, 383830), (65, 307064), (104, 191915), (130, 153532), (131, 152360), (260, 76766), (262, 76180), (293, 68120), (520, 38383), (524, 38090), (586, 34060), (655, 30472), (1048, 19045), (1172, 17030), (1310, 15236), (1465, 13624), (1703, 11720), (2344, 8515), (2620, 7618), (2930, 6812), (3406, 5860), (3809, 5240)]