21275778895

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2711}}^1\times {\mathrm{9749}}^1$

素因数の和:12495

約数の個数: 32

約数和(自身を含む): 30461184000

約数和(自身を除く): 9185405105

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 2711, 9749, 13555, 18977, 48745, 62353, 68243, 94885, 224227, 311765, 341215, 436471, 1121135, 1569589, 2182355, 7847945, 26429539, 132147695, 185006773, 607879397, 925033865, 3039396985, 4255155779, 21275778895]

約数ペア:

[(1, 21275778895), (5, 4255155779), (7, 3039396985), (23, 925033865), (35, 607879397), (115, 185006773), (161, 132147695), (805, 26429539), (2711, 7847945), (9749, 2182355), (13555, 1569589), (18977, 1121135), (48745, 436471), (62353, 341215), (68243, 311765), (94885, 224227)]