20215446860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{167}}^1\times {\mathrm{829}}^1$

素因数の和:1168

約数の個数: 144

約数和(自身を含む): 50072904000

約数和(自身を除く): 29857457140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 149, 167, 196, 245, 298, 334, 490, 596, 668, 745, 829, 835, 980, 1043, 1169, 1490, 1658, 1670, 2086, 2338, 2980, 3316, 3340, 4145, 4172, 4676, 5215, 5803, 5845, 7301, 8183, 8290, 10430, 11606, 11690, 14602, 16366, 16580, 20860, 23212, 23380, 24883, 29015, 29204, 32732, 36505, 40621, 40915, 49766, 58030, 73010, 81242, 81830, 99532, 116060, 123521, 124415, 138443, 146020, 162484, 163660, 174181, 203105, 247042, 248830, 276886, 348362, 406210, 494084, 497660, 553772, 617605, 692215, 696724, 812420, 864647, 870905, 969101, 1219267, 1235210, 1384430, 1729294, 1741810, 1938202, 2438534, 2470420, 2768860, 3458588, 3483620, 3876404, 4323235, 4845505, 4877068, 6052529, 6096335, 6783707, 8646470, 9691010, 12105058, 12192670, 13567414, 17292940, 19382020, 20628007, 24210116, 24385340, 27134828, 30262645, 33918535, 41256014, 60525290, 67837070, 82512028, 103140035, 121050580, 135674140, 144396049, 206280070, 288792098, 412560140, 577584196, 721980245, 1010772343, 1443960490, 2021544686, 2887920980, 4043089372, 5053861715, 10107723430, 20215446860]

約数ペア:

[(1, 20215446860), (2, 10107723430), (4, 5053861715), (5, 4043089372), (7, 2887920980), (10, 2021544686), (14, 1443960490), (20, 1010772343), (28, 721980245), (35, 577584196), (49, 412560140), (70, 288792098), (98, 206280070), (140, 144396049), (149, 135674140), (167, 121050580), (196, 103140035), (245, 82512028), (298, 67837070), (334, 60525290), (490, 41256014), (596, 33918535), (668, 30262645), (745, 27134828), (829, 24385340), (835, 24210116), (980, 20628007), (1043, 19382020), (1169, 17292940), (1490, 13567414), (1658, 12192670), (1670, 12105058), (2086, 9691010), (2338, 8646470), (2980, 6783707), (3316, 6096335), (3340, 6052529), (4145, 4877068), (4172, 4845505), (4676, 4323235), (5215, 3876404), (5803, 3483620), (5845, 3458588), (7301, 2768860), (8183, 2470420), (8290, 2438534), (10430, 1938202), (11606, 1741810), (11690, 1729294), (14602, 1384430), (16366, 1235210), (16580, 1219267), (20860, 969101), (23212, 870905), (23380, 864647), (24883, 812420), (29015, 696724), (29204, 692215), (32732, 617605), (36505, 553772), (40621, 497660), (40915, 494084), (49766, 406210), (58030, 348362), (73010, 276886), (81242, 248830), (81830, 247042), (99532, 203105), (116060, 174181), (123521, 163660), (124415, 162484), (138443, 146020)]