20914590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1783}}^1$

素因数の和:1833

約数の個数: 64

約数和(自身を含む): 55489536

約数和(自身を除く): 34574946

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 23, 30, 34, 46, 51, 69, 85, 102, 115, 138, 170, 230, 255, 345, 391, 510, 690, 782, 1173, 1783, 1955, 2346, 3566, 3910, 5349, 5865, 8915, 10698, 11730, 17830, 26745, 30311, 41009, 53490, 60622, 82018, 90933, 123027, 151555, 181866, 205045, 246054, 303110, 410090, 454665, 615135, 697153, 909330, 1230270, 1394306, 2091459, 3485765, 4182918, 6971530, 10457295, 20914590]

約数ペア:

[(1, 20914590), (2, 10457295), (3, 6971530), (5, 4182918), (6, 3485765), (10, 2091459), (15, 1394306), (17, 1230270), (23, 909330), (30, 697153), (34, 615135), (46, 454665), (51, 410090), (69, 303110), (85, 246054), (102, 205045), (115, 181866), (138, 151555), (170, 123027), (230, 90933), (255, 82018), (345, 60622), (391, 53490), (510, 41009), (690, 30311), (782, 26745), (1173, 17830), (1783, 11730), (1955, 10698), (2346, 8915), (3566, 5865), (3910, 5349)]