21133040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1$

素因数の和:450

約数の個数: 80

約数和(自身を含む): 53434080

約数和(自身を除く): 32301040

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 41, 68, 80, 82, 85, 136, 164, 170, 205, 272, 328, 340, 379, 410, 656, 680, 697, 758, 820, 1360, 1394, 1516, 1640, 1895, 2788, 3032, 3280, 3485, 3790, 5576, 6064, 6443, 6970, 7580, 11152, 12886, 13940, 15160, 15539, 25772, 27880, 30320, 31078, 32215, 51544, 55760, 62156, 64430, 77695, 103088, 124312, 128860, 155390, 248624, 257720, 264163, 310780, 515440, 528326, 621560, 1056652, 1243120, 1320815, 2113304, 2641630, 4226608, 5283260, 10566520, 21133040]

約数ペア:

[(1, 21133040), (2, 10566520), (4, 5283260), (5, 4226608), (8, 2641630), (10, 2113304), (16, 1320815), (17, 1243120), (20, 1056652), (34, 621560), (40, 528326), (41, 515440), (68, 310780), (80, 264163), (82, 257720), (85, 248624), (136, 155390), (164, 128860), (170, 124312), (205, 103088), (272, 77695), (328, 64430), (340, 62156), (379, 55760), (410, 51544), (656, 32215), (680, 31078), (697, 30320), (758, 27880), (820, 25772), (1360, 15539), (1394, 15160), (1516, 13940), (1640, 12886), (1895, 11152), (2788, 7580), (3032, 6970), (3280, 6443), (3485, 6064), (3790, 5576)]