19887190

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 36858240

約数和(自身を除く): 16971050

約数列:

[1, 2, 5, 10, 53, 106, 157, 239, 265, 314, 478, 530, 785, 1195, 1570, 2390, 8321, 12667, 16642, 25334, 37523, 41605, 63335, 75046, 83210, 126670, 187615, 375230, 1988719, 3977438, 9943595, 19887190]

約数ペア:

[(1, 19887190), (2, 9943595), (5, 3977438), (10, 1988719), (53, 375230), (106, 187615), (157, 126670), (239, 83210), (265, 75046), (314, 63335), (478, 41605), (530, 37523), (785, 25334), (1195, 16642), (1570, 12667), (2390, 8321)]