21069100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{853}}^1$

素因数の和:899

約数の個数: 72

約数和(自身を含む): 51889040

約数和(自身を除く): 30819940

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 853, 950, 988, 1235, 1300, 1706, 1900, 2470, 3412, 4265, 4940, 6175, 8530, 11089, 12350, 16207, 17060, 21325, 22178, 24700, 32414, 42650, 44356, 55445, 64828, 81035, 85300, 110890, 162070, 210691, 221780, 277225, 324140, 405175, 421382, 554450, 810350, 842764, 1053455, 1108900, 1620700, 2106910, 4213820, 5267275, 10534550, 21069100]

約数ペア:

[(1, 21069100), (2, 10534550), (4, 5267275), (5, 4213820), (10, 2106910), (13, 1620700), (19, 1108900), (20, 1053455), (25, 842764), (26, 810350), (38, 554450), (50, 421382), (52, 405175), (65, 324140), (76, 277225), (95, 221780), (100, 210691), (130, 162070), (190, 110890), (247, 85300), (260, 81035), (325, 64828), (380, 55445), (475, 44356), (494, 42650), (650, 32414), (853, 24700), (950, 22178), (988, 21325), (1235, 17060), (1300, 16207), (1706, 12350), (1900, 11089), (2470, 8530), (3412, 6175), (4265, 4940)]