19817380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{431}}^1$

素因数の和:481

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 28445660

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 121, 190, 209, 220, 242, 380, 418, 431, 484, 605, 836, 862, 1045, 1210, 1724, 2090, 2155, 2299, 2420, 4180, 4310, 4598, 4741, 8189, 8620, 9196, 9482, 11495, 16378, 18964, 22990, 23705, 32756, 40945, 45980, 47410, 52151, 81890, 90079, 94820, 104302, 163780, 180158, 208604, 260755, 360316, 450395, 521510, 900790, 990869, 1043020, 1801580, 1981738, 3963476, 4954345, 9908690, 19817380]

約数ペア:

[(1, 19817380), (2, 9908690), (4, 4954345), (5, 3963476), (10, 1981738), (11, 1801580), (19, 1043020), (20, 990869), (22, 900790), (38, 521510), (44, 450395), (55, 360316), (76, 260755), (95, 208604), (110, 180158), (121, 163780), (190, 104302), (209, 94820), (220, 90079), (242, 81890), (380, 52151), (418, 47410), (431, 45980), (484, 40945), (605, 32756), (836, 23705), (862, 22990), (1045, 18964), (1210, 16378), (1724, 11495), (2090, 9482), (2155, 9196), (2299, 8620), (2420, 8189), (4180, 4741), (4310, 4598)]