8680520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 20563200

約数和(自身を除く): 11882680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 67, 79, 82, 134, 158, 164, 205, 268, 316, 328, 335, 395, 410, 536, 632, 670, 790, 820, 1340, 1580, 1640, 2680, 2747, 3160, 3239, 5293, 5494, 6478, 10586, 10988, 12956, 13735, 16195, 21172, 21976, 25912, 26465, 27470, 32390, 42344, 52930, 54940, 64780, 105860, 109880, 129560, 211720, 217013, 434026, 868052, 1085065, 1736104, 2170130, 4340260, 8680520]

約数ペア:

[(1, 8680520), (2, 4340260), (4, 2170130), (5, 1736104), (8, 1085065), (10, 868052), (20, 434026), (40, 217013), (41, 211720), (67, 129560), (79, 109880), (82, 105860), (134, 64780), (158, 54940), (164, 52930), (205, 42344), (268, 32390), (316, 27470), (328, 26465), (335, 25912), (395, 21976), (410, 21172), (536, 16195), (632, 13735), (670, 12956), (790, 10988), (820, 10586), (1340, 6478), (1580, 5494), (1640, 5293), (2680, 3239), (2747, 3160)]