18018688

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 39168000

約数和(自身を除く): 21149312

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 64, 76, 124, 128, 152, 239, 248, 304, 478, 496, 589, 608, 956, 992, 1178, 1216, 1912, 1984, 2356, 2432, 3824, 3968, 4541, 4712, 7409, 7648, 9082, 9424, 14818, 15296, 18164, 18848, 29636, 30592, 36328, 37696, 59272, 72656, 75392, 118544, 140771, 145312, 237088, 281542, 290624, 474176, 563084, 581248, 948352, 1126168, 2252336, 4504672, 9009344, 18018688]

約数ペア:

[(1, 18018688), (2, 9009344), (4, 4504672), (8, 2252336), (16, 1126168), (19, 948352), (31, 581248), (32, 563084), (38, 474176), (62, 290624), (64, 281542), (76, 237088), (124, 145312), (128, 140771), (152, 118544), (239, 75392), (248, 72656), (304, 59272), (478, 37696), (496, 36328), (589, 30592), (608, 29636), (956, 18848), (992, 18164), (1178, 15296), (1216, 14818), (1912, 9424), (1984, 9082), (2356, 7648), (2432, 7409), (3824, 4712), (3968, 4541)]