646140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 2010960

約数和(自身を除く): 1364820

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 89, 110, 121, 132, 165, 178, 220, 242, 267, 330, 356, 363, 445, 484, 534, 605, 660, 726, 890, 979, 1068, 1210, 1335, 1452, 1780, 1815, 1958, 2420, 2670, 2937, 3630, 3916, 4895, 5340, 5874, 7260, 9790, 10769, 11748, 14685, 19580, 21538, 29370, 32307, 43076, 53845, 58740, 64614, 107690, 129228, 161535, 215380, 323070, 646140]

約数ペア:

[(1, 646140), (2, 323070), (3, 215380), (4, 161535), (5, 129228), (6, 107690), (10, 64614), (11, 58740), (12, 53845), (15, 43076), (20, 32307), (22, 29370), (30, 21538), (33, 19580), (44, 14685), (55, 11748), (60, 10769), (66, 9790), (89, 7260), (110, 5874), (121, 5340), (132, 4895), (165, 3916), (178, 3630), (220, 2937), (242, 2670), (267, 2420), (330, 1958), (356, 1815), (363, 1780), (445, 1452), (484, 1335), (534, 1210), (605, 1068), (660, 979), (726, 890)]