18667120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12281}}^1$

素因数の和:12313

約数の個数: 40

約数和(自身を含む): 45689040

約数和(自身を除く): 27021920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12281, 24562, 49124, 61405, 98248, 122810, 196496, 233339, 245620, 466678, 491240, 933356, 982480, 1166695, 1866712, 2333390, 3733424, 4666780, 9333560, 18667120]

約数ペア:

[(1, 18667120), (2, 9333560), (4, 4666780), (5, 3733424), (8, 2333390), (10, 1866712), (16, 1166695), (19, 982480), (20, 933356), (38, 491240), (40, 466678), (76, 245620), (80, 233339), (95, 196496), (152, 122810), (190, 98248), (304, 61405), (380, 49124), (760, 24562), (1520, 12281)]