261735520

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{19709}}^1$

素因数の和:19807

約数の個数: 48

約数和(自身を含む): 625831920

約数和(自身を除く): 364096400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1660, 2656, 3320, 6640, 13280, 19709, 39418, 78836, 98545, 157672, 197090, 315344, 394180, 630688, 788360, 1576720, 1635847, 3153440, 3271694, 6543388, 8179235, 13086776, 16358470, 26173552, 32716940, 52347104, 65433880, 130867760, 261735520]

約数ペア:

[(1, 261735520), (2, 130867760), (4, 65433880), (5, 52347104), (8, 32716940), (10, 26173552), (16, 16358470), (20, 13086776), (32, 8179235), (40, 6543388), (80, 3271694), (83, 3153440), (160, 1635847), (166, 1576720), (332, 788360), (415, 630688), (664, 394180), (830, 315344), (1328, 197090), (1660, 157672), (2656, 98545), (3320, 78836), (6640, 39418), (13280, 19709)]