31751820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{421}}^1$

素因数の和:855

約数の個数: 72

約数和(自身を含む): 96773040

約数和(自身を除く): 65021220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 419, 421, 838, 842, 1257, 1263, 1676, 1684, 2095, 2105, 2514, 2526, 3771, 3789, 4190, 4210, 5028, 5052, 6285, 6315, 7542, 7578, 8380, 8420, 12570, 12630, 15084, 15156, 18855, 18945, 25140, 25260, 37710, 37890, 75420, 75780, 176399, 352798, 529197, 705596, 881995, 1058394, 1587591, 1763990, 2116788, 2645985, 3175182, 3527980, 5291970, 6350364, 7937955, 10583940, 15875910, 31751820]

約数ペア:

[(1, 31751820), (2, 15875910), (3, 10583940), (4, 7937955), (5, 6350364), (6, 5291970), (9, 3527980), (10, 3175182), (12, 2645985), (15, 2116788), (18, 1763990), (20, 1587591), (30, 1058394), (36, 881995), (45, 705596), (60, 529197), (90, 352798), (180, 176399), (419, 75780), (421, 75420), (838, 37890), (842, 37710), (1257, 25260), (1263, 25140), (1676, 18945), (1684, 18855), (2095, 15156), (2105, 15084), (2514, 12630), (2526, 12570), (3771, 8420), (3789, 8380), (4190, 7578), (4210, 7542), (5028, 6315), (5052, 6285)]