21817460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 34791820

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 89, 103, 119, 140, 170, 178, 206, 238, 340, 356, 412, 445, 476, 515, 595, 623, 721, 890, 1030, 1190, 1246, 1442, 1513, 1751, 1780, 2060, 2380, 2492, 2884, 3026, 3115, 3502, 3605, 6052, 6230, 7004, 7210, 7565, 8755, 9167, 10591, 12257, 12460, 14420, 15130, 17510, 18334, 21182, 24514, 30260, 35020, 36668, 42364, 45835, 49028, 52955, 61285, 64169, 91670, 105910, 122570, 128338, 155839, 183340, 211820, 245140, 256676, 311678, 320845, 623356, 641690, 779195, 1090873, 1283380, 1558390, 2181746, 3116780, 4363492, 5454365, 10908730, 21817460]

約数ペア:

[(1, 21817460), (2, 10908730), (4, 5454365), (5, 4363492), (7, 3116780), (10, 2181746), (14, 1558390), (17, 1283380), (20, 1090873), (28, 779195), (34, 641690), (35, 623356), (68, 320845), (70, 311678), (85, 256676), (89, 245140), (103, 211820), (119, 183340), (140, 155839), (170, 128338), (178, 122570), (206, 105910), (238, 91670), (340, 64169), (356, 61285), (412, 52955), (445, 49028), (476, 45835), (515, 42364), (595, 36668), (623, 35020), (721, 30260), (890, 24514), (1030, 21182), (1190, 18334), (1246, 17510), (1442, 15130), (1513, 14420), (1751, 12460), (1780, 12257), (2060, 10591), (2380, 9167), (2492, 8755), (2884, 7565), (3026, 7210), (3115, 7004), (3502, 6230), (3605, 6052)]