638445440

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{839}}^1$

素因数の和:928

約数の個数: 128

約数和(自身を含む): 1619352000

約数和(自身を除く): 980906560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 41, 58, 64, 80, 82, 116, 128, 145, 160, 164, 205, 232, 290, 320, 328, 410, 464, 580, 640, 656, 820, 839, 928, 1160, 1189, 1312, 1640, 1678, 1856, 2320, 2378, 2624, 3280, 3356, 3712, 4195, 4640, 4756, 5248, 5945, 6560, 6712, 8390, 9280, 9512, 11890, 13120, 13424, 16780, 18560, 19024, 23780, 24331, 26240, 26848, 33560, 34399, 38048, 47560, 48662, 53696, 67120, 68798, 76096, 95120, 97324, 107392, 121655, 134240, 137596, 152192, 171995, 190240, 194648, 243310, 268480, 275192, 343990, 380480, 389296, 486620, 536960, 550384, 687980, 760960, 778592, 973240, 997571, 1100768, 1375960, 1557184, 1946480, 1995142, 2201536, 2751920, 3114368, 3892960, 3990284, 4403072, 4987855, 5503840, 7785920, 7980568, 9975710, 11007680, 15571840, 15961136, 19951420, 22015360, 31922272, 39902840, 63844544, 79805680, 127689088, 159611360, 319222720, 638445440]

約数ペア:

[(1, 638445440), (2, 319222720), (4, 159611360), (5, 127689088), (8, 79805680), (10, 63844544), (16, 39902840), (20, 31922272), (29, 22015360), (32, 19951420), (40, 15961136), (41, 15571840), (58, 11007680), (64, 9975710), (80, 7980568), (82, 7785920), (116, 5503840), (128, 4987855), (145, 4403072), (160, 3990284), (164, 3892960), (205, 3114368), (232, 2751920), (290, 2201536), (320, 1995142), (328, 1946480), (410, 1557184), (464, 1375960), (580, 1100768), (640, 997571), (656, 973240), (820, 778592), (839, 760960), (928, 687980), (1160, 550384), (1189, 536960), (1312, 486620), (1640, 389296), (1678, 380480), (1856, 343990), (2320, 275192), (2378, 268480), (2624, 243310), (3280, 194648), (3356, 190240), (3712, 171995), (4195, 152192), (4640, 137596), (4756, 134240), (5248, 121655), (5945, 107392), (6560, 97324), (6712, 95120), (8390, 76096), (9280, 68798), (9512, 67120), (11890, 53696), (13120, 48662), (13424, 47560), (16780, 38048), (18560, 34399), (19024, 33560), (23780, 26848), (24331, 26240)]