18909540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8081}}^1$

素因数の和:8109

約数の個数: 72

約数和(自身を含む): 61778808

約数和(自身を除く): 42869268

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8081, 16162, 24243, 32324, 40405, 48486, 72729, 80810, 96972, 105053, 121215, 145458, 161620, 210106, 242430, 290916, 315159, 363645, 420212, 484860, 525265, 630318, 727290, 945477, 1050530, 1260636, 1454580, 1575795, 1890954, 2101060, 3151590, 3781908, 4727385, 6303180, 9454770, 18909540]

約数ペア:

[(1, 18909540), (2, 9454770), (3, 6303180), (4, 4727385), (5, 3781908), (6, 3151590), (9, 2101060), (10, 1890954), (12, 1575795), (13, 1454580), (15, 1260636), (18, 1050530), (20, 945477), (26, 727290), (30, 630318), (36, 525265), (39, 484860), (45, 420212), (52, 363645), (60, 315159), (65, 290916), (78, 242430), (90, 210106), (117, 161620), (130, 145458), (156, 121215), (180, 105053), (195, 96972), (234, 80810), (260, 72729), (390, 48486), (468, 40405), (585, 32324), (780, 24243), (1170, 16162), (2340, 8081)]