218612860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{787}}^1$

素因数の和:875

約数の個数: 96

約数和(自身を含む): 524240640

約数和(自身を除く): 305627780

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 43, 68, 76, 85, 86, 95, 170, 172, 190, 215, 323, 340, 380, 430, 646, 731, 787, 817, 860, 1292, 1462, 1574, 1615, 1634, 2924, 3148, 3230, 3268, 3655, 3935, 4085, 6460, 7310, 7870, 8170, 13379, 13889, 14620, 14953, 15740, 16340, 26758, 27778, 29906, 33841, 53516, 55556, 59812, 66895, 67682, 69445, 74765, 133790, 135364, 138890, 149530, 169205, 254201, 267580, 277780, 299060, 338410, 508402, 575297, 642979, 676820, 1016804, 1150594, 1271005, 1285958, 2301188, 2542010, 2571916, 2876485, 3214895, 5084020, 5752970, 6429790, 10930643, 11505940, 12859580, 21861286, 43722572, 54653215, 109306430, 218612860]

約数ペア:

[(1, 218612860), (2, 109306430), (4, 54653215), (5, 43722572), (10, 21861286), (17, 12859580), (19, 11505940), (20, 10930643), (34, 6429790), (38, 5752970), (43, 5084020), (68, 3214895), (76, 2876485), (85, 2571916), (86, 2542010), (95, 2301188), (170, 1285958), (172, 1271005), (190, 1150594), (215, 1016804), (323, 676820), (340, 642979), (380, 575297), (430, 508402), (646, 338410), (731, 299060), (787, 277780), (817, 267580), (860, 254201), (1292, 169205), (1462, 149530), (1574, 138890), (1615, 135364), (1634, 133790), (2924, 74765), (3148, 69445), (3230, 67682), (3268, 66895), (3655, 59812), (3935, 55556), (4085, 53516), (6460, 33841), (7310, 29906), (7870, 27778), (8170, 26758), (13379, 16340), (13889, 15740), (14620, 14953)]