640541772

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{829}}^1$

素因数の和:992

約数の個数: 108

約数和(自身を含む): 1769214720

約数和(自身を除く): 1128672948

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 127, 156, 169, 234, 254, 338, 381, 468, 507, 508, 676, 762, 829, 1014, 1143, 1521, 1524, 1651, 1658, 2028, 2286, 2487, 3042, 3302, 3316, 4572, 4953, 4974, 6084, 6604, 7461, 9906, 9948, 10777, 14859, 14922, 19812, 21463, 21554, 29718, 29844, 32331, 42926, 43108, 59436, 64389, 64662, 85852, 96993, 105283, 128778, 129324, 140101, 193167, 193986, 210566, 257556, 280202, 315849, 386334, 387972, 420303, 421132, 560404, 631698, 772668, 840606, 947547, 1260909, 1263396, 1368679, 1681212, 1895094, 2521818, 2737358, 3790188, 4106037, 5043636, 5474716, 8212074, 12318111, 16424148, 17792827, 24636222, 35585654, 49272444, 53378481, 71171308, 106756962, 160135443, 213513924, 320270886, 640541772]

約数ペア:

[(1, 640541772), (2, 320270886), (3, 213513924), (4, 160135443), (6, 106756962), (9, 71171308), (12, 53378481), (13, 49272444), (18, 35585654), (26, 24636222), (36, 17792827), (39, 16424148), (52, 12318111), (78, 8212074), (117, 5474716), (127, 5043636), (156, 4106037), (169, 3790188), (234, 2737358), (254, 2521818), (338, 1895094), (381, 1681212), (468, 1368679), (507, 1263396), (508, 1260909), (676, 947547), (762, 840606), (829, 772668), (1014, 631698), (1143, 560404), (1521, 421132), (1524, 420303), (1651, 387972), (1658, 386334), (2028, 315849), (2286, 280202), (2487, 257556), (3042, 210566), (3302, 193986), (3316, 193167), (4572, 140101), (4953, 129324), (4974, 128778), (6084, 105283), (6604, 96993), (7461, 85852), (9906, 64662), (9948, 64389), (10777, 59436), (14859, 43108), (14922, 42926), (19812, 32331), (21463, 29844), (21554, 29718)]