19443420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{991}}^1$

素因数の和:1115

約数の個数: 72

約数和(自身を含む): 59579520

約数和(自身を除く): 40136100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 991, 1090, 1308, 1635, 1962, 1982, 2180, 2973, 3270, 3924, 3964, 4905, 4955, 5946, 6540, 8919, 9810, 9910, 11892, 14865, 17838, 19620, 19820, 29730, 35676, 44595, 59460, 89190, 108019, 178380, 216038, 324057, 432076, 540095, 648114, 972171, 1080190, 1296228, 1620285, 1944342, 2160380, 3240570, 3888684, 4860855, 6481140, 9721710, 19443420]

約数ペア:

[(1, 19443420), (2, 9721710), (3, 6481140), (4, 4860855), (5, 3888684), (6, 3240570), (9, 2160380), (10, 1944342), (12, 1620285), (15, 1296228), (18, 1080190), (20, 972171), (30, 648114), (36, 540095), (45, 432076), (60, 324057), (90, 216038), (109, 178380), (180, 108019), (218, 89190), (327, 59460), (436, 44595), (545, 35676), (654, 29730), (981, 19820), (991, 19620), (1090, 17838), (1308, 14865), (1635, 11892), (1962, 9910), (1982, 9810), (2180, 8919), (2973, 6540), (3270, 5946), (3924, 4955), (3964, 4905)]