720160256

素因数分解:

$2^9\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:240

約数の個数: 120

約数和(自身を含む): 1587892416

約数和(自身を除く): 867732160

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 62, 64, 68, 124, 128, 136, 157, 248, 256, 272, 289, 314, 496, 512, 527, 544, 578, 628, 992, 1054, 1088, 1156, 1256, 1984, 2108, 2176, 2312, 2512, 2669, 3968, 4216, 4352, 4624, 4867, 5024, 5338, 7936, 8432, 8704, 8959, 9248, 9734, 10048, 10676, 15872, 16864, 17918, 18496, 19468, 20096, 21352, 33728, 35836, 36992, 38936, 40192, 42704, 45373, 67456, 71672, 73984, 77872, 80384, 82739, 85408, 90746, 134912, 143344, 147968, 155744, 165478, 170816, 181492, 269824, 286688, 311488, 330956, 341632, 362984, 573376, 622976, 661912, 683264, 725968, 1146752, 1245952, 1323824, 1366528, 1406563, 1451936, 2293504, 2491904, 2647648, 2813126, 2903872, 4587008, 5295296, 5626252, 5807744, 10590592, 11252504, 11615488, 21181184, 22505008, 23230976, 42362368, 45010016, 90020032, 180040064, 360080128, 720160256]

約数ペア:

[(1, 720160256), (2, 360080128), (4, 180040064), (8, 90020032), (16, 45010016), (17, 42362368), (31, 23230976), (32, 22505008), (34, 21181184), (62, 11615488), (64, 11252504), (68, 10590592), (124, 5807744), (128, 5626252), (136, 5295296), (157, 4587008), (248, 2903872), (256, 2813126), (272, 2647648), (289, 2491904), (314, 2293504), (496, 1451936), (512, 1406563), (527, 1366528), (544, 1323824), (578, 1245952), (628, 1146752), (992, 725968), (1054, 683264), (1088, 661912), (1156, 622976), (1256, 573376), (1984, 362984), (2108, 341632), (2176, 330956), (2312, 311488), (2512, 286688), (2669, 269824), (3968, 181492), (4216, 170816), (4352, 165478), (4624, 155744), (4867, 147968), (5024, 143344), (5338, 134912), (7936, 90746), (8432, 85408), (8704, 82739), (8959, 80384), (9248, 77872), (9734, 73984), (10048, 71672), (10676, 67456), (15872, 45373), (16864, 42704), (17918, 40192), (18496, 38936), (19468, 36992), (20096, 35836), (21352, 33728)]