20210872760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{541}}^1\times {\mathrm{71843}}^1$

素因数の和:72408

約数の個数: 64

約数和(自身を含む): 49063704480

約数和(自身を除く): 28852831720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 541, 1082, 2164, 2705, 4328, 5410, 7033, 10820, 14066, 21640, 28132, 35165, 56264, 70330, 71843, 140660, 143686, 281320, 287372, 359215, 574744, 718430, 933959, 1436860, 1867918, 2873720, 3735836, 4669795, 7471672, 9339590, 18679180, 37358360, 38867063, 77734126, 155468252, 194335315, 310936504, 388670630, 505271819, 777341260, 1010543638, 1554682520, 2021087276, 2526359095, 4042174552, 5052718190, 10105436380, 20210872760]

約数ペア:

[(1, 20210872760), (2, 10105436380), (4, 5052718190), (5, 4042174552), (8, 2526359095), (10, 2021087276), (13, 1554682520), (20, 1010543638), (26, 777341260), (40, 505271819), (52, 388670630), (65, 310936504), (104, 194335315), (130, 155468252), (260, 77734126), (520, 38867063), (541, 37358360), (1082, 18679180), (2164, 9339590), (2705, 7471672), (4328, 4669795), (5410, 3735836), (7033, 2873720), (10820, 1867918), (14066, 1436860), (21640, 933959), (28132, 718430), (35165, 574744), (56264, 359215), (70330, 287372), (71843, 281320), (140660, 143686)]