2011900

素因数分解:

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

素因数の和:115

約数の個数: 72

約数和(自身を含む): 4999680

約数和(自身を除く): 2987780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 31, 44, 50, 55, 59, 62, 100, 110, 118, 124, 155, 220, 236, 275, 295, 310, 341, 550, 590, 620, 649, 682, 775, 1100, 1180, 1298, 1364, 1475, 1550, 1705, 1829, 2596, 2950, 3100, 3245, 3410, 3658, 5900, 6490, 6820, 7316, 8525, 9145, 12980, 16225, 17050, 18290, 20119, 32450, 34100, 36580, 40238, 45725, 64900, 80476, 91450, 100595, 182900, 201190, 402380, 502975, 1005950, 2011900]

約数ペア:

[(1, 2011900), (2, 1005950), (4, 502975), (5, 402380), (10, 201190), (11, 182900), (20, 100595), (22, 91450), (25, 80476), (31, 64900), (44, 45725), (50, 40238), (55, 36580), (59, 34100), (62, 32450), (100, 20119), (110, 18290), (118, 17050), (124, 16225), (155, 12980), (220, 9145), (236, 8525), (275, 7316), (295, 6820), (310, 6490), (341, 5900), (550, 3658), (590, 3410), (620, 3245), (649, 3100), (682, 2950), (775, 2596), (1100, 1829), (1180, 1705), (1298, 1550), (1364, 1475)]