21326140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 30928580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 53, 55, 59, 62, 106, 110, 118, 124, 155, 212, 220, 236, 265, 295, 310, 341, 530, 583, 590, 620, 649, 682, 1060, 1166, 1180, 1298, 1364, 1643, 1705, 1829, 2332, 2596, 2915, 3127, 3245, 3286, 3410, 3658, 5830, 6254, 6490, 6572, 6820, 7316, 8215, 9145, 11660, 12508, 12980, 15635, 16430, 18073, 18290, 20119, 31270, 32860, 34397, 36146, 36580, 40238, 62540, 68794, 72292, 80476, 90365, 96937, 100595, 137588, 171985, 180730, 193874, 201190, 343970, 361460, 387748, 402380, 484685, 687940, 969370, 1066307, 1938740, 2132614, 4265228, 5331535, 10663070, 21326140]

約数ペア:

[(1, 21326140), (2, 10663070), (4, 5331535), (5, 4265228), (10, 2132614), (11, 1938740), (20, 1066307), (22, 969370), (31, 687940), (44, 484685), (53, 402380), (55, 387748), (59, 361460), (62, 343970), (106, 201190), (110, 193874), (118, 180730), (124, 171985), (155, 137588), (212, 100595), (220, 96937), (236, 90365), (265, 80476), (295, 72292), (310, 68794), (341, 62540), (530, 40238), (583, 36580), (590, 36146), (620, 34397), (649, 32860), (682, 31270), (1060, 20119), (1166, 18290), (1180, 18073), (1298, 16430), (1364, 15635), (1643, 12980), (1705, 12508), (1829, 11660), (2332, 9145), (2596, 8215), (2915, 7316), (3127, 6820), (3245, 6572), (3286, 6490), (3410, 6254), (3658, 5830)]