205502720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5179}}^1$

素因数の和:5231

約数の個数: 72

約数和(自身を含む): 508220160

約数和(自身を除く): 302717440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 5179, 7936, 9920, 10358, 19840, 20716, 25895, 39680, 41432, 51790, 82864, 103580, 160549, 165728, 207160, 321098, 331456, 414320, 642196, 662912, 802745, 828640, 1284392, 1325824, 1605490, 1657280, 2568784, 3210980, 3314560, 5137568, 6421960, 6629120, 10275136, 12843920, 20550272, 25687840, 41100544, 51375680, 102751360, 205502720]

約数ペア:

[(1, 205502720), (2, 102751360), (4, 51375680), (5, 41100544), (8, 25687840), (10, 20550272), (16, 12843920), (20, 10275136), (31, 6629120), (32, 6421960), (40, 5137568), (62, 3314560), (64, 3210980), (80, 2568784), (124, 1657280), (128, 1605490), (155, 1325824), (160, 1284392), (248, 828640), (256, 802745), (310, 662912), (320, 642196), (496, 414320), (620, 331456), (640, 321098), (992, 207160), (1240, 165728), (1280, 160549), (1984, 103580), (2480, 82864), (3968, 51790), (4960, 41432), (5179, 39680), (7936, 25895), (9920, 20716), (10358, 19840)]