18747850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{383}}^1$

素因数の和:495

約数の個数: 48

約数和(自身を含む): 38568960

約数和(自身を除く): 19821110

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 89, 110, 178, 275, 383, 445, 550, 766, 890, 979, 1915, 1958, 2225, 3830, 4213, 4450, 4895, 8426, 9575, 9790, 19150, 21065, 24475, 34087, 42130, 48950, 68174, 105325, 170435, 210650, 340870, 374957, 749914, 852175, 1704350, 1874785, 3749570, 9373925, 18747850]

約数ペア:

[(1, 18747850), (2, 9373925), (5, 3749570), (10, 1874785), (11, 1704350), (22, 852175), (25, 749914), (50, 374957), (55, 340870), (89, 210650), (110, 170435), (178, 105325), (275, 68174), (383, 48950), (445, 42130), (550, 34087), (766, 24475), (890, 21065), (979, 19150), (1915, 9790), (1958, 9575), (2225, 8426), (3830, 4895), (4213, 4450)]