12420850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 25264008

約数和(自身を除く): 12843158

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 97, 130, 194, 197, 325, 394, 485, 650, 970, 985, 1261, 1970, 2425, 2522, 2561, 4850, 4925, 5122, 6305, 9850, 12610, 12805, 19109, 25610, 31525, 38218, 63050, 64025, 95545, 128050, 191090, 248417, 477725, 496834, 955450, 1242085, 2484170, 6210425, 12420850]

約数ペア:

[(1, 12420850), (2, 6210425), (5, 2484170), (10, 1242085), (13, 955450), (25, 496834), (26, 477725), (50, 248417), (65, 191090), (97, 128050), (130, 95545), (194, 64025), (197, 63050), (325, 38218), (394, 31525), (485, 25610), (650, 19109), (970, 12805), (985, 12610), (1261, 9850), (1970, 6305), (2425, 5122), (2522, 4925), (2561, 4850)]