207781720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2087}}^1$

素因数の和:2248

約数の個数: 64

約数和(自身を含む): 496108800

約数和(自身を除く): 288327080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 131, 152, 190, 262, 380, 524, 655, 760, 1048, 1310, 2087, 2489, 2620, 4174, 4978, 5240, 8348, 9956, 10435, 12445, 16696, 19912, 20870, 24890, 39653, 41740, 49780, 79306, 83480, 99560, 158612, 198265, 273397, 317224, 396530, 546794, 793060, 1093588, 1366985, 1586120, 2187176, 2733970, 5194543, 5467940, 10389086, 10935880, 20778172, 25972715, 41556344, 51945430, 103890860, 207781720]

約数ペア:

[(1, 207781720), (2, 103890860), (4, 51945430), (5, 41556344), (8, 25972715), (10, 20778172), (19, 10935880), (20, 10389086), (38, 5467940), (40, 5194543), (76, 2733970), (95, 2187176), (131, 1586120), (152, 1366985), (190, 1093588), (262, 793060), (380, 546794), (524, 396530), (655, 317224), (760, 273397), (1048, 198265), (1310, 158612), (2087, 99560), (2489, 83480), (2620, 79306), (4174, 49780), (4978, 41740), (5240, 39653), (8348, 24890), (9956, 20870), (10435, 19912), (12445, 16696)]