21878830

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 44307648

約数和(自身を除く): 22428818

約数列:

[1, 2, 5, 10, 17, 34, 41, 43, 73, 82, 85, 86, 146, 170, 205, 215, 365, 410, 430, 697, 730, 731, 1241, 1394, 1462, 1763, 2482, 2993, 3139, 3485, 3526, 3655, 5986, 6205, 6278, 6970, 7310, 8815, 12410, 14965, 15695, 17630, 29930, 29971, 31390, 50881, 53363, 59942, 101762, 106726, 128699, 149855, 254405, 257398, 266815, 299710, 508810, 533630, 643495, 1286990, 2187883, 4375766, 10939415, 21878830]

約数ペア:

[(1, 21878830), (2, 10939415), (5, 4375766), (10, 2187883), (17, 1286990), (34, 643495), (41, 533630), (43, 508810), (73, 299710), (82, 266815), (85, 257398), (86, 254405), (146, 149855), (170, 128699), (205, 106726), (215, 101762), (365, 59942), (410, 53363), (430, 50881), (697, 31390), (730, 29971), (731, 29930), (1241, 17630), (1394, 15695), (1462, 14965), (1763, 12410), (2482, 8815), (2993, 7310), (3139, 6970), (3485, 6278), (3526, 6205), (3655, 5986)]