661328460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{691}}^1$

素因数の和:1128

約数の個数: 144

約数和(自身を含む): 2168755680

約数和(自身を除く): 1507427220

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, 180, 195, 234, 260, 390, 409, 468, 585, 691, 780, 818, 1170, 1227, 1382, 1636, 2045, 2073, 2340, 2454, 2764, 3455, 3681, 4090, 4146, 4908, 5317, 6135, 6219, 6910, 7362, 8180, 8292, 8983, 10365, 10634, 12270, 12438, 13820, 14724, 15951, 17966, 18405, 20730, 21268, 24540, 24876, 26585, 26949, 31095, 31902, 35932, 36810, 41460, 44915, 47853, 53170, 53898, 62190, 63804, 73620, 79755, 80847, 89830, 95706, 106340, 107796, 124380, 134745, 159510, 161694, 179660, 191412, 239265, 269490, 282619, 319020, 323388, 404235, 478530, 538980, 565238, 808470, 847857, 957060, 1130476, 1413095, 1616940, 1695714, 2543571, 2826190, 3391428, 3674047, 4239285, 5087142, 5652380, 7348094, 8478570, 10174284, 11022141, 12717855, 14696188, 16957140, 18370235, 22044282, 25435710, 33066423, 36740470, 44088564, 50871420, 55110705, 66132846, 73480940, 110221410, 132265692, 165332115, 220442820, 330664230, 661328460]

約数ペア:

[(1, 661328460), (2, 330664230), (3, 220442820), (4, 165332115), (5, 132265692), (6, 110221410), (9, 73480940), (10, 66132846), (12, 55110705), (13, 50871420), (15, 44088564), (18, 36740470), (20, 33066423), (26, 25435710), (30, 22044282), (36, 18370235), (39, 16957140), (45, 14696188), (52, 12717855), (60, 11022141), (65, 10174284), (78, 8478570), (90, 7348094), (117, 5652380), (130, 5087142), (156, 4239285), (180, 3674047), (195, 3391428), (234, 2826190), (260, 2543571), (390, 1695714), (409, 1616940), (468, 1413095), (585, 1130476), (691, 957060), (780, 847857), (818, 808470), (1170, 565238), (1227, 538980), (1382, 478530), (1636, 404235), (2045, 323388), (2073, 319020), (2340, 282619), (2454, 269490), (2764, 239265), (3455, 191412), (3681, 179660), (4090, 161694), (4146, 159510), (4908, 134745), (5317, 124380), (6135, 107796), (6219, 106340), (6910, 95706), (7362, 89830), (8180, 80847), (8292, 79755), (8983, 73620), (10365, 63804), (10634, 62190), (12270, 53898), (12438, 53170), (13820, 47853), (14724, 44915), (15951, 41460), (17966, 36810), (18405, 35932), (20730, 31902), (21268, 31095), (24540, 26949), (24876, 26585)]