81425920

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1871}}^1$

素因数の和:1911

約数の個数: 80

約数和(自身を含む): 206826048

約数和(自身を除く): 125400128

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 512, 544, 640, 680, 1088, 1280, 1360, 1871, 2176, 2560, 2720, 3742, 4352, 5440, 7484, 8704, 9355, 10880, 14968, 18710, 21760, 29936, 31807, 37420, 43520, 59872, 63614, 74840, 119744, 127228, 149680, 159035, 239488, 254456, 299360, 318070, 478976, 508912, 598720, 636140, 957952, 1017824, 1197440, 1272280, 2035648, 2394880, 2544560, 4071296, 4789760, 5089120, 8142592, 10178240, 16285184, 20356480, 40712960, 81425920]

約数ペア:

[(1, 81425920), (2, 40712960), (4, 20356480), (5, 16285184), (8, 10178240), (10, 8142592), (16, 5089120), (17, 4789760), (20, 4071296), (32, 2544560), (34, 2394880), (40, 2035648), (64, 1272280), (68, 1197440), (80, 1017824), (85, 957952), (128, 636140), (136, 598720), (160, 508912), (170, 478976), (256, 318070), (272, 299360), (320, 254456), (340, 239488), (512, 159035), (544, 149680), (640, 127228), (680, 119744), (1088, 74840), (1280, 63614), (1360, 59872), (1871, 43520), (2176, 37420), (2560, 31807), (2720, 29936), (3742, 21760), (4352, 18710), (5440, 14968), (7484, 10880), (8704, 9355)]