81291424

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:306

約数の個数: 72

約数和(自身を含む): 175125888

約数和(自身を除く): 93834464

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 76, 124, 152, 227, 248, 304, 361, 454, 496, 589, 608, 722, 908, 992, 1178, 1444, 1816, 2356, 2888, 3632, 4313, 4712, 5776, 7037, 7264, 8626, 9424, 11191, 11552, 14074, 17252, 18848, 22382, 28148, 34504, 44764, 56296, 69008, 81947, 89528, 112592, 133703, 138016, 163894, 179056, 225184, 267406, 327788, 358112, 534812, 655576, 1069624, 1311152, 2139248, 2540357, 2622304, 4278496, 5080714, 10161428, 20322856, 40645712, 81291424]

約数ペア:

[(1, 81291424), (2, 40645712), (4, 20322856), (8, 10161428), (16, 5080714), (19, 4278496), (31, 2622304), (32, 2540357), (38, 2139248), (62, 1311152), (76, 1069624), (124, 655576), (152, 534812), (227, 358112), (248, 327788), (304, 267406), (361, 225184), (454, 179056), (496, 163894), (589, 138016), (608, 133703), (722, 112592), (908, 89528), (992, 81947), (1178, 69008), (1444, 56296), (1816, 44764), (2356, 34504), (2888, 28148), (3632, 22382), (4313, 18848), (4712, 17252), (5776, 14074), (7037, 11552), (7264, 11191), (8626, 9424)]