19157220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1499}}^1$

素因数の和:1585

約数の個数: 72

約数和(自身を含む): 58968000

約数和(自身を除く): 39810780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1499, 2130, 2556, 2998, 3195, 4260, 4497, 5996, 6390, 7495, 8994, 12780, 13491, 14990, 17988, 22485, 26982, 29980, 44970, 53964, 67455, 89940, 106429, 134910, 212858, 269820, 319287, 425716, 532145, 638574, 957861, 1064290, 1277148, 1596435, 1915722, 2128580, 3192870, 3831444, 4789305, 6385740, 9578610, 19157220]

約数ペア:

[(1, 19157220), (2, 9578610), (3, 6385740), (4, 4789305), (5, 3831444), (6, 3192870), (9, 2128580), (10, 1915722), (12, 1596435), (15, 1277148), (18, 1064290), (20, 957861), (30, 638574), (36, 532145), (45, 425716), (60, 319287), (71, 269820), (90, 212858), (142, 134910), (180, 106429), (213, 89940), (284, 67455), (355, 53964), (426, 44970), (639, 29980), (710, 26982), (852, 22485), (1065, 17988), (1278, 14990), (1420, 13491), (1499, 12780), (2130, 8994), (2556, 7495), (2998, 6390), (3195, 5996), (4260, 4497)]