19556145

素因数分解:

$3^2\times 5^1\times 7^4\times {\mathrm{181}}^1$

素因数の和:220

約数の個数: 60

約数和(自身を含む): 39762996

約数和(自身を除く): 20206851

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 181, 245, 315, 343, 441, 543, 735, 905, 1029, 1267, 1629, 1715, 2205, 2401, 2715, 3087, 3801, 5145, 6335, 7203, 8145, 8869, 11403, 12005, 15435, 19005, 21609, 26607, 36015, 44345, 57015, 62083, 79821, 108045, 133035, 186249, 310415, 399105, 434581, 558747, 931245, 1303743, 2172905, 2793735, 3911229, 6518715, 19556145]

約数ペア:

[(1, 19556145), (3, 6518715), (5, 3911229), (7, 2793735), (9, 2172905), (15, 1303743), (21, 931245), (35, 558747), (45, 434581), (49, 399105), (63, 310415), (105, 186249), (147, 133035), (181, 108045), (245, 79821), (315, 62083), (343, 57015), (441, 44345), (543, 36015), (735, 26607), (905, 21609), (1029, 19005), (1267, 15435), (1629, 12005), (1715, 11403), (2205, 8869), (2401, 8145), (2715, 7203), (3087, 6335), (3801, 5145)]