20881013090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{21929}}^1$

素因数の和:22227

約数の個数: 64

約数和(自身を含む): 43857192960

約数和(自身を除く): 22976179870

約数列:

[1, 2, 5, 7, 10, 14, 35, 61, 70, 122, 223, 305, 427, 446, 610, 854, 1115, 1561, 2135, 2230, 3122, 4270, 7805, 13603, 15610, 21929, 27206, 43858, 68015, 95221, 109645, 136030, 153503, 190442, 219290, 307006, 476105, 767515, 952210, 1337669, 1535030, 2675338, 4890167, 6688345, 9363683, 9780334, 13376690, 18727366, 24450835, 34231169, 46818415, 48901670, 68462338, 93636830, 171155845, 298300187, 342311690, 596600374, 1491500935, 2088101309, 2983001870, 4176202618, 10440506545, 20881013090]

約数ペア:

[(1, 20881013090), (2, 10440506545), (5, 4176202618), (7, 2983001870), (10, 2088101309), (14, 1491500935), (35, 596600374), (61, 342311690), (70, 298300187), (122, 171155845), (223, 93636830), (305, 68462338), (427, 48901670), (446, 46818415), (610, 34231169), (854, 24450835), (1115, 18727366), (1561, 13376690), (2135, 9780334), (2230, 9363683), (3122, 6688345), (4270, 4890167), (7805, 2675338), (13603, 1535030), (15610, 1337669), (21929, 952210), (27206, 767515), (43858, 476105), (68015, 307006), (95221, 219290), (109645, 190442), (136030, 153503)]