19424840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 46872000

約数和(自身を除く): 27447160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 419, 488, 610, 760, 838, 1159, 1220, 1676, 2095, 2318, 2440, 3352, 4190, 4636, 5795, 7961, 8380, 9272, 11590, 15922, 16760, 23180, 25559, 31844, 39805, 46360, 51118, 63688, 79610, 102236, 127795, 159220, 204472, 255590, 318440, 485621, 511180, 971242, 1022360, 1942484, 2428105, 3884968, 4856210, 9712420, 19424840]

約数ペア:

[(1, 19424840), (2, 9712420), (4, 4856210), (5, 3884968), (8, 2428105), (10, 1942484), (19, 1022360), (20, 971242), (38, 511180), (40, 485621), (61, 318440), (76, 255590), (95, 204472), (122, 159220), (152, 127795), (190, 102236), (244, 79610), (305, 63688), (380, 51118), (419, 46360), (488, 39805), (610, 31844), (760, 25559), (838, 23180), (1159, 16760), (1220, 15922), (1676, 11590), (2095, 9272), (2318, 8380), (2440, 7961), (3352, 5795), (4190, 4636)]