19958265

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18748935

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 93, 95, 135, 155, 171, 251, 279, 285, 465, 513, 589, 753, 837, 855, 1255, 1395, 1767, 2259, 2565, 2945, 3765, 4185, 4769, 5301, 6777, 7781, 8835, 11295, 14307, 15903, 23343, 23845, 26505, 33885, 38905, 42921, 70029, 71535, 79515, 116715, 128763, 147839, 210087, 214605, 350145, 443517, 643815, 739195, 1050435, 1330551, 2217585, 3991653, 6652755, 19958265]

約数ペア:

[(1, 19958265), (3, 6652755), (5, 3991653), (9, 2217585), (15, 1330551), (19, 1050435), (27, 739195), (31, 643815), (45, 443517), (57, 350145), (93, 214605), (95, 210087), (135, 147839), (155, 128763), (171, 116715), (251, 79515), (279, 71535), (285, 70029), (465, 42921), (513, 38905), (589, 33885), (753, 26505), (837, 23845), (855, 23343), (1255, 15903), (1395, 14307), (1767, 11295), (2259, 8835), (2565, 7781), (2945, 6777), (3765, 5301), (4185, 4769)]