90451840

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1789}}^1$

素因数の和:1887

約数の個数: 64

約数和(自身を含む): 219096000

約数和(自身を除く): 128644160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 632, 640, 790, 1264, 1580, 1789, 2528, 3160, 3578, 5056, 6320, 7156, 8945, 10112, 12640, 14312, 17890, 25280, 28624, 35780, 50560, 57248, 71560, 114496, 141331, 143120, 228992, 282662, 286240, 565324, 572480, 706655, 1130648, 1144960, 1413310, 2261296, 2826620, 4522592, 5653240, 9045184, 11306480, 18090368, 22612960, 45225920, 90451840]

約数ペア:

[(1, 90451840), (2, 45225920), (4, 22612960), (5, 18090368), (8, 11306480), (10, 9045184), (16, 5653240), (20, 4522592), (32, 2826620), (40, 2261296), (64, 1413310), (79, 1144960), (80, 1130648), (128, 706655), (158, 572480), (160, 565324), (316, 286240), (320, 282662), (395, 228992), (632, 143120), (640, 141331), (790, 114496), (1264, 71560), (1580, 57248), (1789, 50560), (2528, 35780), (3160, 28624), (3578, 25280), (5056, 17890), (6320, 14312), (7156, 12640), (8945, 10112)]