21083640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{7639}}^1$

素因数の和:7676

約数の個数: 64

約数和(自身を含む): 66009600

約数和(自身を除く): 44925960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 460, 552, 690, 920, 1380, 2760, 7639, 15278, 22917, 30556, 38195, 45834, 61112, 76390, 91668, 114585, 152780, 175697, 183336, 229170, 305560, 351394, 458340, 527091, 702788, 878485, 916680, 1054182, 1405576, 1756970, 2108364, 2635455, 3513940, 4216728, 5270910, 7027880, 10541820, 21083640]

約数ペア:

[(1, 21083640), (2, 10541820), (3, 7027880), (4, 5270910), (5, 4216728), (6, 3513940), (8, 2635455), (10, 2108364), (12, 1756970), (15, 1405576), (20, 1054182), (23, 916680), (24, 878485), (30, 702788), (40, 527091), (46, 458340), (60, 351394), (69, 305560), (92, 229170), (115, 183336), (120, 175697), (138, 152780), (184, 114585), (230, 91668), (276, 76390), (345, 61112), (460, 45834), (552, 38195), (690, 30556), (920, 22917), (1380, 15278), (2760, 7639)]