20645552

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{601}}^1$

素因数の和:741

約数の個数: 40

約数和(自身を含む): 42549360

約数和(自身を除く): 21903808

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 113, 152, 226, 304, 452, 601, 904, 1202, 1808, 2147, 2404, 4294, 4808, 8588, 9616, 11419, 17176, 22838, 34352, 45676, 67913, 91352, 135826, 182704, 271652, 543304, 1086608, 1290347, 2580694, 5161388, 10322776, 20645552]

約数ペア:

[(1, 20645552), (2, 10322776), (4, 5161388), (8, 2580694), (16, 1290347), (19, 1086608), (38, 543304), (76, 271652), (113, 182704), (152, 135826), (226, 91352), (304, 67913), (452, 45676), (601, 34352), (904, 22838), (1202, 17176), (1808, 11419), (2147, 9616), (2404, 8588), (4294, 4808)]