18845645

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 29091888

約数和(自身を除く): 10246243

約数列:

[1, 5, 7, 13, 35, 49, 61, 65, 91, 97, 245, 305, 427, 455, 485, 637, 679, 793, 1261, 2135, 2989, 3185, 3395, 3965, 4753, 5551, 5917, 6305, 8827, 14945, 23765, 27755, 29585, 38857, 41419, 44135, 61789, 76921, 194285, 207095, 289933, 308945, 384605, 538447, 1449665, 2692235, 3769129, 18845645]

約数ペア:

[(1, 18845645), (5, 3769129), (7, 2692235), (13, 1449665), (35, 538447), (49, 384605), (61, 308945), (65, 289933), (91, 207095), (97, 194285), (245, 76921), (305, 61789), (427, 44135), (455, 41419), (485, 38857), (637, 29585), (679, 27755), (793, 23765), (1261, 14945), (2135, 8827), (2989, 6305), (3185, 5917), (3395, 5551), (3965, 4753)]