261918540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{647}}^1$

素因数の和:848

約数の個数: 144

約数和(自身を含む): 861876288

約数和(自身を除く): 599957748

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 173, 180, 195, 234, 260, 346, 390, 468, 519, 585, 647, 692, 780, 865, 1038, 1170, 1294, 1557, 1730, 1941, 2076, 2249, 2340, 2588, 2595, 3114, 3235, 3460, 3882, 4498, 5190, 5823, 6228, 6470, 6747, 7764, 7785, 8411, 8996, 9705, 10380, 11245, 11646, 12940, 13494, 15570, 16822, 19410, 20241, 22490, 23292, 25233, 26988, 29115, 31140, 33644, 33735, 38820, 40482, 42055, 44980, 50466, 58230, 67470, 75699, 80964, 84110, 100932, 101205, 111931, 116460, 126165, 134940, 151398, 168220, 202410, 223862, 252330, 302796, 335793, 378495, 404820, 447724, 504660, 559655, 671586, 756990, 1007379, 1119310, 1343172, 1455103, 1513980, 1678965, 2014758, 2238620, 2910206, 3357930, 4029516, 4365309, 5036895, 5820412, 6715860, 7275515, 8730618, 10073790, 13095927, 14551030, 17461236, 20147580, 21826545, 26191854, 29102060, 43653090, 52383708, 65479635, 87306180, 130959270, 261918540]

約数ペア:

[(1, 261918540), (2, 130959270), (3, 87306180), (4, 65479635), (5, 52383708), (6, 43653090), (9, 29102060), (10, 26191854), (12, 21826545), (13, 20147580), (15, 17461236), (18, 14551030), (20, 13095927), (26, 10073790), (30, 8730618), (36, 7275515), (39, 6715860), (45, 5820412), (52, 5036895), (60, 4365309), (65, 4029516), (78, 3357930), (90, 2910206), (117, 2238620), (130, 2014758), (156, 1678965), (173, 1513980), (180, 1455103), (195, 1343172), (234, 1119310), (260, 1007379), (346, 756990), (390, 671586), (468, 559655), (519, 504660), (585, 447724), (647, 404820), (692, 378495), (780, 335793), (865, 302796), (1038, 252330), (1170, 223862), (1294, 202410), (1557, 168220), (1730, 151398), (1941, 134940), (2076, 126165), (2249, 116460), (2340, 111931), (2588, 101205), (2595, 100932), (3114, 84110), (3235, 80964), (3460, 75699), (3882, 67470), (4498, 58230), (5190, 50466), (5823, 44980), (6228, 42055), (6470, 40482), (6747, 38820), (7764, 33735), (7785, 33644), (8411, 31140), (8996, 29115), (9705, 26988), (10380, 25233), (11245, 23292), (11646, 22490), (12940, 20241), (13494, 19410), (15570, 16822)]