28455180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^2$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 86254896

約数和(自身を除く): 57799716

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 191, 195, 260, 382, 390, 573, 764, 780, 955, 1146, 1910, 2292, 2483, 2865, 3820, 4966, 5730, 7449, 9932, 11460, 12415, 14898, 24830, 29796, 36481, 37245, 49660, 72962, 74490, 109443, 145924, 148980, 182405, 218886, 364810, 437772, 474253, 547215, 729620, 948506, 1094430, 1422759, 1897012, 2188860, 2371265, 2845518, 4742530, 5691036, 7113795, 9485060, 14227590, 28455180]

約数ペア:

[(1, 28455180), (2, 14227590), (3, 9485060), (4, 7113795), (5, 5691036), (6, 4742530), (10, 2845518), (12, 2371265), (13, 2188860), (15, 1897012), (20, 1422759), (26, 1094430), (30, 948506), (39, 729620), (52, 547215), (60, 474253), (65, 437772), (78, 364810), (130, 218886), (156, 182405), (191, 148980), (195, 145924), (260, 109443), (382, 74490), (390, 72962), (573, 49660), (764, 37245), (780, 36481), (955, 29796), (1146, 24830), (1910, 14898), (2292, 12415), (2483, 11460), (2865, 9932), (3820, 7449), (4966, 5730)]