18181376

素因数分解:

$2^8\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 39244800

約数和(自身を除く): 21063424

約数列:

[1, 2, 4, 8, 16, 29, 31, 32, 58, 62, 64, 79, 116, 124, 128, 158, 232, 248, 256, 316, 464, 496, 632, 899, 928, 992, 1264, 1798, 1856, 1984, 2291, 2449, 2528, 3596, 3712, 3968, 4582, 4898, 5056, 7192, 7424, 7936, 9164, 9796, 10112, 14384, 18328, 19592, 20224, 28768, 36656, 39184, 57536, 71021, 73312, 78368, 115072, 142042, 146624, 156736, 230144, 284084, 293248, 313472, 568168, 586496, 626944, 1136336, 2272672, 4545344, 9090688, 18181376]

約数ペア:

[(1, 18181376), (2, 9090688), (4, 4545344), (8, 2272672), (16, 1136336), (29, 626944), (31, 586496), (32, 568168), (58, 313472), (62, 293248), (64, 284084), (79, 230144), (116, 156736), (124, 146624), (128, 142042), (158, 115072), (232, 78368), (248, 73312), (256, 71021), (316, 57536), (464, 39184), (496, 36656), (632, 28768), (899, 20224), (928, 19592), (992, 18328), (1264, 14384), (1798, 10112), (1856, 9796), (1984, 9164), (2291, 7936), (2449, 7424), (2528, 7192), (3596, 5056), (3712, 4898), (3968, 4582)]