28940097940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^2\times {\mathrm{1181}}^1$

素因数の和:1817

約数の個数: 72

約数和(自身を含む): 65718627912

約数和(自身を除く): 36778529972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 307, 614, 1181, 1228, 1535, 2362, 3070, 3991, 4724, 5905, 6140, 7982, 11810, 15353, 15964, 19955, 23620, 30706, 39910, 61412, 76765, 79820, 94249, 153530, 188498, 307060, 362567, 376996, 471245, 725134, 942490, 1225237, 1450268, 1812835, 1884980, 2450474, 3625670, 4713371, 4900948, 6126185, 7251340, 9426742, 12252370, 18853484, 23566855, 24504740, 47133710, 94267420, 111308069, 222616138, 445232276, 556540345, 1113080690, 1447004897, 2226161380, 2894009794, 5788019588, 7235024485, 14470048970, 28940097940]

約数ペア:

[(1, 28940097940), (2, 14470048970), (4, 7235024485), (5, 5788019588), (10, 2894009794), (13, 2226161380), (20, 1447004897), (26, 1113080690), (52, 556540345), (65, 445232276), (130, 222616138), (260, 111308069), (307, 94267420), (614, 47133710), (1181, 24504740), (1228, 23566855), (1535, 18853484), (2362, 12252370), (3070, 9426742), (3991, 7251340), (4724, 6126185), (5905, 4900948), (6140, 4713371), (7982, 3625670), (11810, 2450474), (15353, 1884980), (15964, 1812835), (19955, 1450268), (23620, 1225237), (30706, 942490), (39910, 725134), (61412, 471245), (76765, 376996), (79820, 362567), (94249, 307060), (153530, 188498)]