1640894620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{269}}^1$

素因数の和:535

約数の個数: 96

約数和(自身を含む): 3646399680

約数和(自身を除く): 2005505060

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 173, 205, 215, 269, 346, 410, 430, 538, 692, 820, 860, 865, 1076, 1345, 1730, 1763, 2690, 3460, 3526, 5380, 7052, 7093, 7439, 8815, 11029, 11567, 14186, 14878, 17630, 22058, 23134, 28372, 29756, 35260, 35465, 37195, 44116, 46268, 46537, 55145, 57835, 70930, 74390, 93074, 110290, 115670, 141860, 148780, 186148, 220580, 231340, 232685, 304999, 465370, 474247, 609998, 930740, 948494, 1219996, 1524995, 1896988, 1908017, 2001091, 2371235, 3049990, 3816034, 4002182, 4742470, 6099980, 7632068, 8004364, 9484940, 9540085, 10005455, 19080170, 20010910, 38160340, 40021820, 82044731, 164089462, 328178924, 410223655, 820447310, 1640894620]

約数ペア:

[(1, 1640894620), (2, 820447310), (4, 410223655), (5, 328178924), (10, 164089462), (20, 82044731), (41, 40021820), (43, 38160340), (82, 20010910), (86, 19080170), (164, 10005455), (172, 9540085), (173, 9484940), (205, 8004364), (215, 7632068), (269, 6099980), (346, 4742470), (410, 4002182), (430, 3816034), (538, 3049990), (692, 2371235), (820, 2001091), (860, 1908017), (865, 1896988), (1076, 1524995), (1345, 1219996), (1730, 948494), (1763, 930740), (2690, 609998), (3460, 474247), (3526, 465370), (5380, 304999), (7052, 232685), (7093, 231340), (7439, 220580), (8815, 186148), (11029, 148780), (11567, 141860), (14186, 115670), (14878, 110290), (17630, 93074), (22058, 74390), (23134, 70930), (28372, 57835), (29756, 55145), (35260, 46537), (35465, 46268), (37195, 44116)]