20992790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:126

約数の個数: 128

約数和(自身を含む): 52254720

約数和(自身を除く): 31261930

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 23, 26, 34, 35, 46, 59, 65, 70, 85, 91, 115, 118, 119, 130, 161, 170, 182, 221, 230, 238, 295, 299, 322, 391, 413, 442, 455, 590, 595, 598, 767, 782, 805, 826, 910, 1003, 1105, 1190, 1357, 1495, 1534, 1547, 1610, 1955, 2006, 2065, 2093, 2210, 2714, 2737, 2990, 3094, 3835, 3910, 4130, 4186, 5015, 5083, 5369, 5474, 6785, 7021, 7670, 7735, 9499, 10030, 10166, 10465, 10738, 13039, 13570, 13685, 14042, 15470, 17641, 18998, 20930, 23069, 25415, 26078, 26845, 27370, 35105, 35282, 35581, 46138, 47495, 50830, 53690, 65195, 70210, 71162, 88205, 91273, 94990, 115345, 123487, 130390, 161483, 176410, 177905, 182546, 230690, 246974, 299897, 322966, 355810, 456365, 599794, 617435, 807415, 912730, 1234870, 1499485, 1614830, 2099279, 2998970, 4198558, 10496395, 20992790]

約数ペア:

[(1, 20992790), (2, 10496395), (5, 4198558), (7, 2998970), (10, 2099279), (13, 1614830), (14, 1499485), (17, 1234870), (23, 912730), (26, 807415), (34, 617435), (35, 599794), (46, 456365), (59, 355810), (65, 322966), (70, 299897), (85, 246974), (91, 230690), (115, 182546), (118, 177905), (119, 176410), (130, 161483), (161, 130390), (170, 123487), (182, 115345), (221, 94990), (230, 91273), (238, 88205), (295, 71162), (299, 70210), (322, 65195), (391, 53690), (413, 50830), (442, 47495), (455, 46138), (590, 35581), (595, 35282), (598, 35105), (767, 27370), (782, 26845), (805, 26078), (826, 25415), (910, 23069), (1003, 20930), (1105, 18998), (1190, 17641), (1357, 15470), (1495, 14042), (1534, 13685), (1547, 13570), (1610, 13039), (1955, 10738), (2006, 10465), (2065, 10166), (2093, 10030), (2210, 9499), (2714, 7735), (2737, 7670), (2990, 7021), (3094, 6785), (3835, 5474), (3910, 5369), (4130, 5083), (4186, 5015)]