28139980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3457}}^1$

素因数の和:3514

約数の個数: 48

約数和(自身を含む): 66227616

約数和(自身を除く): 38087636

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 3457, 4070, 6914, 8140, 13828, 17285, 34570, 38027, 69140, 76054, 127909, 152108, 190135, 255818, 380270, 511636, 639545, 760540, 1279090, 1406999, 2558180, 2813998, 5627996, 7034995, 14069990, 28139980]

約数ペア:

[(1, 28139980), (2, 14069990), (4, 7034995), (5, 5627996), (10, 2813998), (11, 2558180), (20, 1406999), (22, 1279090), (37, 760540), (44, 639545), (55, 511636), (74, 380270), (110, 255818), (148, 190135), (185, 152108), (220, 127909), (370, 76054), (407, 69140), (740, 38027), (814, 34570), (1628, 17285), (2035, 13828), (3457, 8140), (4070, 6914)]