20155954940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{463}}^1\times {\mathrm{17989}}^1$

素因数の和:18483

約数の個数: 72

約数和(自身を含む): 46628352960

約数和(自身を除く): 26472398020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 463, 484, 605, 926, 1210, 1852, 2315, 2420, 4630, 5093, 9260, 10186, 17989, 20372, 25465, 35978, 50930, 56023, 71956, 89945, 101860, 112046, 179890, 197879, 224092, 280115, 359780, 395758, 560230, 791516, 989395, 1120460, 1978790, 2176669, 3957580, 4353338, 8328907, 8706676, 10883345, 16657814, 21766690, 33315628, 41644535, 43533380, 83289070, 91617977, 166578140, 183235954, 366471908, 458089885, 916179770, 1007797747, 1832359540, 2015595494, 4031190988, 5038988735, 10077977470, 20155954940]

約数ペア:

[(1, 20155954940), (2, 10077977470), (4, 5038988735), (5, 4031190988), (10, 2015595494), (11, 1832359540), (20, 1007797747), (22, 916179770), (44, 458089885), (55, 366471908), (110, 183235954), (121, 166578140), (220, 91617977), (242, 83289070), (463, 43533380), (484, 41644535), (605, 33315628), (926, 21766690), (1210, 16657814), (1852, 10883345), (2315, 8706676), (2420, 8328907), (4630, 4353338), (5093, 3957580), (9260, 2176669), (10186, 1978790), (17989, 1120460), (20372, 989395), (25465, 791516), (35978, 560230), (50930, 395758), (56023, 359780), (71956, 280115), (89945, 224092), (101860, 197879), (112046, 179890)]