28653820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{577}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 65253888

約数和(自身を除く): 36600068

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 382, 577, 764, 955, 1154, 1910, 2308, 2483, 2885, 3820, 4966, 5770, 7501, 9932, 11540, 12415, 15002, 24830, 30004, 37505, 49660, 75010, 110207, 150020, 220414, 440828, 551035, 1102070, 1432691, 2204140, 2865382, 5730764, 7163455, 14326910, 28653820]

約数ペア:

[(1, 28653820), (2, 14326910), (4, 7163455), (5, 5730764), (10, 2865382), (13, 2204140), (20, 1432691), (26, 1102070), (52, 551035), (65, 440828), (130, 220414), (191, 150020), (260, 110207), (382, 75010), (577, 49660), (764, 37505), (955, 30004), (1154, 24830), (1910, 15002), (2308, 12415), (2483, 11540), (2885, 9932), (3820, 7501), (4966, 5770)]