856463660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{106261}}^1$

素因数の和:106314

約数の個数: 48

約数和(自身を含む): 1999425792

約数和(自身を除く): 1142962132

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 106261, 212522, 425044, 531305, 1062610, 1381393, 2125220, 2762786, 3294091, 5525572, 6588182, 6906965, 13176364, 13813930, 16470455, 27627860, 32940910, 42823183, 65881820, 85646366, 171292732, 214115915, 428231830, 856463660]

約数ペア:

[(1, 856463660), (2, 428231830), (4, 214115915), (5, 171292732), (10, 85646366), (13, 65881820), (20, 42823183), (26, 32940910), (31, 27627860), (52, 16470455), (62, 13813930), (65, 13176364), (124, 6906965), (130, 6588182), (155, 5525572), (260, 3294091), (310, 2762786), (403, 2125220), (620, 1381393), (806, 1062610), (1612, 531305), (2015, 425044), (4030, 212522), (8060, 106261)]