38983780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:301

約数の個数: 72

約数和(自身を含む): 91498680

約数和(自身を除く): 52514900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 121, 178, 181, 220, 242, 356, 362, 445, 484, 605, 724, 890, 905, 979, 1210, 1780, 1810, 1958, 1991, 2420, 3620, 3916, 3982, 4895, 7964, 9790, 9955, 10769, 16109, 19580, 19910, 21538, 21901, 32218, 39820, 43076, 43802, 53845, 64436, 80545, 87604, 107690, 109505, 161090, 177199, 215380, 219010, 322180, 354398, 438020, 708796, 885995, 1771990, 1949189, 3543980, 3898378, 7796756, 9745945, 19491890, 38983780]

約数ペア:

[(1, 38983780), (2, 19491890), (4, 9745945), (5, 7796756), (10, 3898378), (11, 3543980), (20, 1949189), (22, 1771990), (44, 885995), (55, 708796), (89, 438020), (110, 354398), (121, 322180), (178, 219010), (181, 215380), (220, 177199), (242, 161090), (356, 109505), (362, 107690), (445, 87604), (484, 80545), (605, 64436), (724, 53845), (890, 43802), (905, 43076), (979, 39820), (1210, 32218), (1780, 21901), (1810, 21538), (1958, 19910), (1991, 19580), (2420, 16109), (3620, 10769), (3916, 9955), (3982, 9790), (4895, 7964)]