201801990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{7723}}^1$

素因数の和:7813

約数の個数: 64

約数和(自身を含む): 529433856

約数和(自身を除く): 327631866

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 67, 78, 130, 134, 195, 201, 335, 390, 402, 670, 871, 1005, 1742, 2010, 2613, 4355, 5226, 7723, 8710, 13065, 15446, 23169, 26130, 38615, 46338, 77230, 100399, 115845, 200798, 231690, 301197, 501995, 517441, 602394, 1003990, 1034882, 1505985, 1552323, 2587205, 3011970, 3104646, 5174410, 6726733, 7761615, 13453466, 15523230, 20180199, 33633665, 40360398, 67267330, 100900995, 201801990]

約数ペア:

[(1, 201801990), (2, 100900995), (3, 67267330), (5, 40360398), (6, 33633665), (10, 20180199), (13, 15523230), (15, 13453466), (26, 7761615), (30, 6726733), (39, 5174410), (65, 3104646), (67, 3011970), (78, 2587205), (130, 1552323), (134, 1505985), (195, 1034882), (201, 1003990), (335, 602394), (390, 517441), (402, 501995), (670, 301197), (871, 231690), (1005, 200798), (1742, 115845), (2010, 100399), (2613, 77230), (4355, 46338), (5226, 38615), (7723, 26130), (8710, 23169), (13065, 15446)]