18123456

素因数分解:

$2^6\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:218

約数の個数: 112

約数和(自身を含む): 52998624

約数和(自身を除く): 34875168

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 53, 64, 78, 96, 104, 106, 137, 156, 159, 192, 208, 212, 274, 312, 318, 411, 416, 424, 548, 624, 636, 689, 822, 832, 848, 1096, 1248, 1272, 1378, 1644, 1696, 1781, 2067, 2192, 2496, 2544, 2756, 3288, 3392, 3562, 4134, 4384, 5088, 5343, 5512, 6576, 7124, 7261, 8268, 8768, 10176, 10686, 11024, 13152, 14248, 14522, 16536, 21372, 21783, 22048, 26304, 28496, 29044, 33072, 42744, 43566, 44096, 56992, 58088, 66144, 85488, 87132, 94393, 113984, 116176, 132288, 170976, 174264, 188786, 232352, 283179, 341952, 348528, 377572, 464704, 566358, 697056, 755144, 1132716, 1394112, 1510288, 2265432, 3020576, 4530864, 6041152, 9061728, 18123456]

約数ペア:

[(1, 18123456), (2, 9061728), (3, 6041152), (4, 4530864), (6, 3020576), (8, 2265432), (12, 1510288), (13, 1394112), (16, 1132716), (24, 755144), (26, 697056), (32, 566358), (39, 464704), (48, 377572), (52, 348528), (53, 341952), (64, 283179), (78, 232352), (96, 188786), (104, 174264), (106, 170976), (137, 132288), (156, 116176), (159, 113984), (192, 94393), (208, 87132), (212, 85488), (274, 66144), (312, 58088), (318, 56992), (411, 44096), (416, 43566), (424, 42744), (548, 33072), (624, 29044), (636, 28496), (689, 26304), (822, 22048), (832, 21783), (848, 21372), (1096, 16536), (1248, 14522), (1272, 14248), (1378, 13152), (1644, 11024), (1696, 10686), (1781, 10176), (2067, 8768), (2192, 8268), (2496, 7261), (2544, 7124), (2756, 6576), (3288, 5512), (3392, 5343), (3562, 5088), (4134, 4384)]