20777900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1453}}^1$

素因数の和:1491

約数の個数: 72

約数和(自身を含む): 53007024

約数和(自身を除く): 32229124

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1430, 1453, 2860, 2906, 3575, 5812, 7150, 7265, 14300, 14530, 15983, 18889, 29060, 31966, 36325, 37778, 63932, 72650, 75556, 79915, 94445, 145300, 159830, 188890, 207779, 319660, 377780, 399575, 415558, 472225, 799150, 831116, 944450, 1038895, 1598300, 1888900, 2077790, 4155580, 5194475, 10388950, 20777900]

約数ペア:

[(1, 20777900), (2, 10388950), (4, 5194475), (5, 4155580), (10, 2077790), (11, 1888900), (13, 1598300), (20, 1038895), (22, 944450), (25, 831116), (26, 799150), (44, 472225), (50, 415558), (52, 399575), (55, 377780), (65, 319660), (100, 207779), (110, 188890), (130, 159830), (143, 145300), (220, 94445), (260, 79915), (275, 75556), (286, 72650), (325, 63932), (550, 37778), (572, 36325), (650, 31966), (715, 29060), (1100, 18889), (1300, 15983), (1430, 14530), (1453, 14300), (2860, 7265), (2906, 7150), (3575, 5812)]