20375460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:282

約数の個数: 144

約数和(自身を含む): 71774976

約数和(自身を除く): 51399516

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 103, 105, 126, 140, 157, 180, 206, 210, 252, 309, 314, 315, 412, 420, 471, 515, 618, 628, 630, 721, 785, 927, 942, 1030, 1099, 1236, 1260, 1413, 1442, 1545, 1570, 1854, 1884, 2060, 2163, 2198, 2355, 2826, 2884, 3090, 3140, 3297, 3605, 3708, 4326, 4396, 4635, 4710, 5495, 5652, 6180, 6489, 6594, 7065, 7210, 8652, 9270, 9420, 9891, 10815, 10990, 12978, 13188, 14130, 14420, 16171, 16485, 18540, 19782, 21630, 21980, 25956, 28260, 32342, 32445, 32970, 39564, 43260, 48513, 49455, 64684, 64890, 65940, 80855, 97026, 98910, 113197, 129780, 145539, 161710, 194052, 197820, 226394, 242565, 291078, 323420, 339591, 452788, 485130, 565985, 582156, 679182, 727695, 970260, 1018773, 1131970, 1358364, 1455390, 1697955, 2037546, 2263940, 2910780, 3395910, 4075092, 5093865, 6791820, 10187730, 20375460]

約数ペア:

[(1, 20375460), (2, 10187730), (3, 6791820), (4, 5093865), (5, 4075092), (6, 3395910), (7, 2910780), (9, 2263940), (10, 2037546), (12, 1697955), (14, 1455390), (15, 1358364), (18, 1131970), (20, 1018773), (21, 970260), (28, 727695), (30, 679182), (35, 582156), (36, 565985), (42, 485130), (45, 452788), (60, 339591), (63, 323420), (70, 291078), (84, 242565), (90, 226394), (103, 197820), (105, 194052), (126, 161710), (140, 145539), (157, 129780), (180, 113197), (206, 98910), (210, 97026), (252, 80855), (309, 65940), (314, 64890), (315, 64684), (412, 49455), (420, 48513), (471, 43260), (515, 39564), (618, 32970), (628, 32445), (630, 32342), (721, 28260), (785, 25956), (927, 21980), (942, 21630), (1030, 19782), (1099, 18540), (1236, 16485), (1260, 16171), (1413, 14420), (1442, 14130), (1545, 13188), (1570, 12978), (1854, 10990), (1884, 10815), (2060, 9891), (2163, 9420), (2198, 9270), (2355, 8652), (2826, 7210), (2884, 7065), (3090, 6594), (3140, 6489), (3297, 6180), (3605, 5652), (3708, 5495), (4326, 4710), (4396, 4635)]