19814830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:313

約数の個数: 64

約数和(自身を含む): 43338240

約数和(自身を除く): 23523410

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 43, 58, 70, 86, 145, 203, 215, 227, 290, 301, 406, 430, 454, 602, 1015, 1135, 1247, 1505, 1589, 2030, 2270, 2494, 3010, 3178, 6235, 6583, 7945, 8729, 9761, 12470, 13166, 15890, 17458, 19522, 32915, 43645, 46081, 48805, 65830, 68327, 87290, 92162, 97610, 136654, 230405, 283069, 341635, 460810, 566138, 683270, 1415345, 1981483, 2830690, 3962966, 9907415, 19814830]

約数ペア:

[(1, 19814830), (2, 9907415), (5, 3962966), (7, 2830690), (10, 1981483), (14, 1415345), (29, 683270), (35, 566138), (43, 460810), (58, 341635), (70, 283069), (86, 230405), (145, 136654), (203, 97610), (215, 92162), (227, 87290), (290, 68327), (301, 65830), (406, 48805), (430, 46081), (454, 43645), (602, 32915), (1015, 19522), (1135, 17458), (1247, 15890), (1505, 13166), (1589, 12470), (2030, 9761), (2270, 8729), (2494, 7945), (3010, 6583), (3178, 6235)]