19969952

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:573

約数の個数: 48

約数和(自身を含む): 41658624

約数和(自身を除く): 21688672

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 62, 82, 124, 164, 248, 328, 491, 496, 656, 982, 992, 1271, 1312, 1964, 2542, 3928, 5084, 7856, 10168, 15221, 15712, 20131, 20336, 30442, 40262, 40672, 60884, 80524, 121768, 161048, 243536, 322096, 487072, 624061, 644192, 1248122, 2496244, 4992488, 9984976, 19969952]

約数ペア:

[(1, 19969952), (2, 9984976), (4, 4992488), (8, 2496244), (16, 1248122), (31, 644192), (32, 624061), (41, 487072), (62, 322096), (82, 243536), (124, 161048), (164, 121768), (248, 80524), (328, 60884), (491, 40672), (496, 40262), (656, 30442), (982, 20336), (992, 20131), (1271, 15712), (1312, 15221), (1964, 10168), (2542, 7856), (3928, 5084)]