18943600

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3643}}^1$

素因数の和:3674

約数の個数: 60

約数和(自身を含む): 49026376

約数和(自身を除く): 30082776

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3643, 5200, 7286, 14572, 18215, 29144, 36430, 47359, 58288, 72860, 91075, 94718, 145720, 182150, 189436, 236795, 291440, 364300, 378872, 473590, 728600, 757744, 947180, 1183975, 1457200, 1894360, 2367950, 3788720, 4735900, 9471800, 18943600]

約数ペア:

[(1, 18943600), (2, 9471800), (4, 4735900), (5, 3788720), (8, 2367950), (10, 1894360), (13, 1457200), (16, 1183975), (20, 947180), (25, 757744), (26, 728600), (40, 473590), (50, 378872), (52, 364300), (65, 291440), (80, 236795), (100, 189436), (104, 182150), (130, 145720), (200, 94718), (208, 91075), (260, 72860), (325, 58288), (400, 47359), (520, 36430), (650, 29144), (1040, 18215), (1300, 14572), (2600, 7286), (3643, 5200)]