21680010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:444

約数の個数: 96

約数和(自身を含む): 62674560

約数和(自身を除く): 40994550

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 61, 66, 90, 99, 110, 122, 165, 183, 198, 305, 330, 359, 366, 495, 549, 610, 671, 718, 915, 990, 1077, 1098, 1342, 1795, 1830, 2013, 2154, 2745, 3231, 3355, 3590, 3949, 4026, 5385, 5490, 6039, 6462, 6710, 7898, 10065, 10770, 11847, 12078, 16155, 19745, 20130, 21899, 23694, 30195, 32310, 35541, 39490, 43798, 59235, 60390, 65697, 71082, 109495, 118470, 131394, 177705, 197091, 218990, 240889, 328485, 355410, 394182, 481778, 656970, 722667, 985455, 1204445, 1445334, 1970910, 2168001, 2408890, 3613335, 4336002, 7226670, 10840005, 21680010]

約数ペア:

[(1, 21680010), (2, 10840005), (3, 7226670), (5, 4336002), (6, 3613335), (9, 2408890), (10, 2168001), (11, 1970910), (15, 1445334), (18, 1204445), (22, 985455), (30, 722667), (33, 656970), (45, 481778), (55, 394182), (61, 355410), (66, 328485), (90, 240889), (99, 218990), (110, 197091), (122, 177705), (165, 131394), (183, 118470), (198, 109495), (305, 71082), (330, 65697), (359, 60390), (366, 59235), (495, 43798), (549, 39490), (610, 35541), (671, 32310), (718, 30195), (915, 23694), (990, 21899), (1077, 20130), (1098, 19745), (1342, 16155), (1795, 12078), (1830, 11847), (2013, 10770), (2154, 10065), (2745, 7898), (3231, 6710), (3355, 6462), (3590, 6039), (3949, 5490), (4026, 5385)]