21460920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13757}}^1$

素因数の和:13784

約数の個数: 64

約数和(自身を含む): 69340320

約数和(自身を除く): 47879400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13757, 27514, 41271, 55028, 68785, 82542, 110056, 137570, 165084, 178841, 206355, 275140, 330168, 357682, 412710, 536523, 550280, 715364, 825420, 894205, 1073046, 1430728, 1650840, 1788410, 2146092, 2682615, 3576820, 4292184, 5365230, 7153640, 10730460, 21460920]

約数ペア:

[(1, 21460920), (2, 10730460), (3, 7153640), (4, 5365230), (5, 4292184), (6, 3576820), (8, 2682615), (10, 2146092), (12, 1788410), (13, 1650840), (15, 1430728), (20, 1073046), (24, 894205), (26, 825420), (30, 715364), (39, 550280), (40, 536523), (52, 412710), (60, 357682), (65, 330168), (78, 275140), (104, 206355), (120, 178841), (130, 165084), (156, 137570), (195, 110056), (260, 82542), (312, 68785), (390, 55028), (520, 41271), (780, 27514), (1560, 13757)]