21237996

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1249}}^1$

素因数の和:1378

約数の個数: 48

約数和(自身を含む): 53900000

約数和(自身を除く): 32662004

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 109, 156, 218, 327, 436, 654, 1249, 1308, 1417, 2498, 2834, 3747, 4251, 4996, 5668, 7494, 8502, 14988, 16237, 17004, 32474, 48711, 64948, 97422, 136141, 194844, 272282, 408423, 544564, 816846, 1633692, 1769833, 3539666, 5309499, 7079332, 10618998, 21237996]

約数ペア:

[(1, 21237996), (2, 10618998), (3, 7079332), (4, 5309499), (6, 3539666), (12, 1769833), (13, 1633692), (26, 816846), (39, 544564), (52, 408423), (78, 272282), (109, 194844), (156, 136141), (218, 97422), (327, 64948), (436, 48711), (654, 32474), (1249, 17004), (1308, 16237), (1417, 14988), (2498, 8502), (2834, 7494), (3747, 5668), (4251, 4996)]