19806540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:471

約数の個数: 96

約数和(自身を含む): 60775680

約数和(自身を除く): 40969140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 67, 78, 130, 134, 156, 195, 201, 260, 268, 335, 379, 390, 402, 670, 758, 780, 804, 871, 1005, 1137, 1340, 1516, 1742, 1895, 2010, 2274, 2613, 3484, 3790, 4020, 4355, 4548, 4927, 5226, 5685, 7580, 8710, 9854, 10452, 11370, 13065, 14781, 17420, 19708, 22740, 24635, 25393, 26130, 29562, 49270, 50786, 52260, 59124, 73905, 76179, 98540, 101572, 126965, 147810, 152358, 253930, 295620, 304716, 330109, 380895, 507860, 660218, 761790, 990327, 1320436, 1523580, 1650545, 1980654, 3301090, 3961308, 4951635, 6602180, 9903270, 19806540]

約数ペア:

[(1, 19806540), (2, 9903270), (3, 6602180), (4, 4951635), (5, 3961308), (6, 3301090), (10, 1980654), (12, 1650545), (13, 1523580), (15, 1320436), (20, 990327), (26, 761790), (30, 660218), (39, 507860), (52, 380895), (60, 330109), (65, 304716), (67, 295620), (78, 253930), (130, 152358), (134, 147810), (156, 126965), (195, 101572), (201, 98540), (260, 76179), (268, 73905), (335, 59124), (379, 52260), (390, 50786), (402, 49270), (670, 29562), (758, 26130), (780, 25393), (804, 24635), (871, 22740), (1005, 19708), (1137, 17420), (1340, 14781), (1516, 13065), (1742, 11370), (1895, 10452), (2010, 9854), (2274, 8710), (2613, 7580), (3484, 5685), (3790, 5226), (4020, 4927), (4355, 4548)]