20970540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1031}}^1$

素因数の和:1159

約数の個数: 72

約数和(自身を含む): 64235808

約数和(自身を除く): 43265268

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 113, 180, 226, 339, 452, 565, 678, 1017, 1031, 1130, 1356, 1695, 2034, 2062, 2260, 3093, 3390, 4068, 4124, 5085, 5155, 6186, 6780, 9279, 10170, 10310, 12372, 15465, 18558, 20340, 20620, 30930, 37116, 46395, 61860, 92790, 116503, 185580, 233006, 349509, 466012, 582515, 699018, 1048527, 1165030, 1398036, 1747545, 2097054, 2330060, 3495090, 4194108, 5242635, 6990180, 10485270, 20970540]

約数ペア:

[(1, 20970540), (2, 10485270), (3, 6990180), (4, 5242635), (5, 4194108), (6, 3495090), (9, 2330060), (10, 2097054), (12, 1747545), (15, 1398036), (18, 1165030), (20, 1048527), (30, 699018), (36, 582515), (45, 466012), (60, 349509), (90, 233006), (113, 185580), (180, 116503), (226, 92790), (339, 61860), (452, 46395), (565, 37116), (678, 30930), (1017, 20620), (1031, 20340), (1130, 18558), (1356, 15465), (1695, 12372), (2034, 10310), (2062, 10170), (2260, 9279), (3093, 6780), (3390, 6186), (4068, 5155), (4124, 5085)]