20348380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1283}}^1$

素因数の和:1366

約数の個数: 48

約数和(自身を含む): 46809504

約数和(自身を除く): 26461124

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1283, 1586, 2566, 3172, 3965, 5132, 6415, 7930, 12830, 15860, 16679, 25660, 33358, 66716, 78263, 83395, 156526, 166790, 313052, 333580, 391315, 782630, 1017419, 1565260, 2034838, 4069676, 5087095, 10174190, 20348380]

約数ペア:

[(1, 20348380), (2, 10174190), (4, 5087095), (5, 4069676), (10, 2034838), (13, 1565260), (20, 1017419), (26, 782630), (52, 391315), (61, 333580), (65, 313052), (122, 166790), (130, 156526), (244, 83395), (260, 78263), (305, 66716), (610, 33358), (793, 25660), (1220, 16679), (1283, 15860), (1586, 12830), (2566, 7930), (3172, 6415), (3965, 5132)]