642640440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{839}}^1$

素因数の和:1357

約数の個数: 128

約数和(自身を含む): 2082931200

約数和(自身を除く): 1440290760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 491, 520, 780, 839, 982, 1473, 1560, 1678, 1964, 2455, 2517, 2946, 3356, 3928, 4195, 4910, 5034, 5892, 6383, 6712, 7365, 8390, 9820, 10068, 10907, 11784, 12585, 12766, 14730, 16780, 19149, 19640, 20136, 21814, 25170, 25532, 29460, 31915, 32721, 33560, 38298, 43628, 50340, 51064, 54535, 58920, 63830, 65442, 76596, 87256, 95745, 100680, 109070, 127660, 130884, 153192, 163605, 191490, 218140, 255320, 261768, 327210, 382980, 411949, 436280, 654420, 765960, 823898, 1235847, 1308840, 1647796, 2059745, 2471694, 3295592, 4119490, 4943388, 5355337, 6179235, 8238980, 9886776, 10710674, 12358470, 16066011, 16477960, 21421348, 24716940, 26776685, 32132022, 42842696, 49433880, 53553370, 64264044, 80330055, 107106740, 128528088, 160660110, 214213480, 321320220, 642640440]

約数ペア:

[(1, 642640440), (2, 321320220), (3, 214213480), (4, 160660110), (5, 128528088), (6, 107106740), (8, 80330055), (10, 64264044), (12, 53553370), (13, 49433880), (15, 42842696), (20, 32132022), (24, 26776685), (26, 24716940), (30, 21421348), (39, 16477960), (40, 16066011), (52, 12358470), (60, 10710674), (65, 9886776), (78, 8238980), (104, 6179235), (120, 5355337), (130, 4943388), (156, 4119490), (195, 3295592), (260, 2471694), (312, 2059745), (390, 1647796), (491, 1308840), (520, 1235847), (780, 823898), (839, 765960), (982, 654420), (1473, 436280), (1560, 411949), (1678, 382980), (1964, 327210), (2455, 261768), (2517, 255320), (2946, 218140), (3356, 191490), (3928, 163605), (4195, 153192), (4910, 130884), (5034, 127660), (5892, 109070), (6383, 100680), (6712, 95745), (7365, 87256), (8390, 76596), (9820, 65442), (10068, 63830), (10907, 58920), (11784, 54535), (12585, 51064), (12766, 50340), (14730, 43628), (16780, 38298), (19149, 33560), (19640, 32721), (20136, 31915), (21814, 29460), (25170, 25532)]