21372112

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{307}}^1$

素因数の和:563

約数の個数: 40

約数和(自身を含む): 43920800

約数和(自身を除く): 22548688

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 229, 304, 307, 458, 614, 916, 1228, 1832, 2456, 3664, 4351, 4912, 5833, 8702, 11666, 17404, 23332, 34808, 46664, 69616, 70303, 93328, 140606, 281212, 562424, 1124848, 1335757, 2671514, 5343028, 10686056, 21372112]

約数ペア:

[(1, 21372112), (2, 10686056), (4, 5343028), (8, 2671514), (16, 1335757), (19, 1124848), (38, 562424), (76, 281212), (152, 140606), (229, 93328), (304, 70303), (307, 69616), (458, 46664), (614, 34808), (916, 23332), (1228, 17404), (1832, 11666), (2456, 8702), (3664, 5833), (4351, 4912)]