21065460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:377

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 43285260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 113, 130, 156, 195, 226, 239, 260, 339, 390, 452, 478, 565, 678, 717, 780, 956, 1130, 1195, 1356, 1434, 1469, 1695, 2260, 2390, 2868, 2938, 3107, 3390, 3585, 4407, 4780, 5876, 6214, 6780, 7170, 7345, 8814, 9321, 12428, 14340, 14690, 15535, 17628, 18642, 22035, 27007, 29380, 31070, 37284, 44070, 46605, 54014, 62140, 81021, 88140, 93210, 108028, 135035, 162042, 186420, 270070, 324084, 351091, 405105, 540140, 702182, 810210, 1053273, 1404364, 1620420, 1755455, 2106546, 3510910, 4213092, 5266365, 7021820, 10532730, 21065460]

約数ペア:

[(1, 21065460), (2, 10532730), (3, 7021820), (4, 5266365), (5, 4213092), (6, 3510910), (10, 2106546), (12, 1755455), (13, 1620420), (15, 1404364), (20, 1053273), (26, 810210), (30, 702182), (39, 540140), (52, 405105), (60, 351091), (65, 324084), (78, 270070), (113, 186420), (130, 162042), (156, 135035), (195, 108028), (226, 93210), (239, 88140), (260, 81021), (339, 62140), (390, 54014), (452, 46605), (478, 44070), (565, 37284), (678, 31070), (717, 29380), (780, 27007), (956, 22035), (1130, 18642), (1195, 17628), (1356, 15535), (1434, 14690), (1469, 14340), (1695, 12428), (2260, 9321), (2390, 8814), (2868, 7345), (2938, 7170), (3107, 6780), (3390, 6214), (3585, 5876), (4407, 4780)]