20805078268

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{5333}}^1$

素因数の和:5591

約数の個数: 72

約数和(自身を含む): 40997124000

約数和(自身を除く): 20192045732

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 116, 169, 199, 338, 377, 398, 676, 754, 796, 1508, 2587, 4901, 5174, 5333, 5771, 9802, 10348, 10666, 11542, 19604, 21332, 23084, 33631, 67262, 69329, 75023, 134524, 138658, 150046, 154657, 277316, 300092, 309314, 618628, 901277, 975299, 1061267, 1802554, 1950598, 2010541, 2122534, 3605108, 3901196, 4021082, 4245068, 8042164, 13796471, 26137033, 27592942, 30776743, 52274066, 55185884, 61553486, 104548132, 123106972, 179354123, 358708246, 400097659, 717416492, 800195318, 1600390636, 5201269567, 10402539134, 20805078268]

約数ペア:

[(1, 20805078268), (2, 10402539134), (4, 5201269567), (13, 1600390636), (26, 800195318), (29, 717416492), (52, 400097659), (58, 358708246), (116, 179354123), (169, 123106972), (199, 104548132), (338, 61553486), (377, 55185884), (398, 52274066), (676, 30776743), (754, 27592942), (796, 26137033), (1508, 13796471), (2587, 8042164), (4901, 4245068), (5174, 4021082), (5333, 3901196), (5771, 3605108), (9802, 2122534), (10348, 2010541), (10666, 1950598), (11542, 1802554), (19604, 1061267), (21332, 975299), (23084, 901277), (33631, 618628), (67262, 309314), (69329, 300092), (75023, 277316), (134524, 154657), (138658, 150046)]