19287736

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 42134400

約数和(自身を除く): 22846664

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 43, 52, 76, 86, 104, 152, 172, 227, 247, 344, 454, 494, 559, 817, 908, 988, 1118, 1634, 1816, 1976, 2236, 2951, 3268, 4313, 4472, 5902, 6536, 8626, 9761, 10621, 11804, 17252, 19522, 21242, 23608, 34504, 39044, 42484, 56069, 78088, 84968, 112138, 126893, 185459, 224276, 253786, 370918, 448552, 507572, 741836, 1015144, 1483672, 2410967, 4821934, 9643868, 19287736]

約数ペア:

[(1, 19287736), (2, 9643868), (4, 4821934), (8, 2410967), (13, 1483672), (19, 1015144), (26, 741836), (38, 507572), (43, 448552), (52, 370918), (76, 253786), (86, 224276), (104, 185459), (152, 126893), (172, 112138), (227, 84968), (247, 78088), (344, 56069), (454, 42484), (494, 39044), (559, 34504), (817, 23608), (908, 21242), (988, 19522), (1118, 17252), (1634, 11804), (1816, 10621), (1976, 9761), (2236, 8626), (2951, 6536), (3268, 5902), (4313, 4472)]