28655460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{401}}^1$

素因数の和:813

約数の個数: 72

約数和(自身を含む): 87357816

約数和(自身を除く): 58702356

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 397, 401, 794, 802, 1191, 1203, 1588, 1604, 1985, 2005, 2382, 2406, 3573, 3609, 3970, 4010, 4764, 4812, 5955, 6015, 7146, 7218, 7940, 8020, 11910, 12030, 14292, 14436, 17865, 18045, 23820, 24060, 35730, 36090, 71460, 72180, 159197, 318394, 477591, 636788, 795985, 955182, 1432773, 1591970, 1910364, 2387955, 2865546, 3183940, 4775910, 5731092, 7163865, 9551820, 14327730, 28655460]

約数ペア:

[(1, 28655460), (2, 14327730), (3, 9551820), (4, 7163865), (5, 5731092), (6, 4775910), (9, 3183940), (10, 2865546), (12, 2387955), (15, 1910364), (18, 1591970), (20, 1432773), (30, 955182), (36, 795985), (45, 636788), (60, 477591), (90, 318394), (180, 159197), (397, 72180), (401, 71460), (794, 36090), (802, 35730), (1191, 24060), (1203, 23820), (1588, 18045), (1604, 17865), (1985, 14436), (2005, 14292), (2382, 12030), (2406, 11910), (3573, 8020), (3609, 7940), (3970, 7218), (4010, 7146), (4764, 6015), (4812, 5955)]