81306428

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1993}}^1$

素因数の和:2082

約数の個数: 48

約数和(自身を含む): 171515904

約数和(自身を除く): 90209476

約数列:

[1, 2, 4, 7, 14, 28, 31, 47, 62, 94, 124, 188, 217, 329, 434, 658, 868, 1316, 1457, 1993, 2914, 3986, 5828, 7972, 10199, 13951, 20398, 27902, 40796, 55804, 61783, 93671, 123566, 187342, 247132, 374684, 432481, 655697, 864962, 1311394, 1729924, 2622788, 2903801, 5807602, 11615204, 20326607, 40653214, 81306428]

約数ペア:

[(1, 81306428), (2, 40653214), (4, 20326607), (7, 11615204), (14, 5807602), (28, 2903801), (31, 2622788), (47, 1729924), (62, 1311394), (94, 864962), (124, 655697), (188, 432481), (217, 374684), (329, 247132), (434, 187342), (658, 123566), (868, 93671), (1316, 61783), (1457, 55804), (1993, 40796), (2914, 27902), (3986, 20398), (5828, 13951), (7972, 10199)]