21277881836

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1583}}^1\times {\mathrm{2221}}^1$

素因数の和:3914

約数の個数: 48

約数和(自身を含む): 39912808320

約数和(自身を除く): 18634926484

約数列:

[1, 2, 4, 17, 34, 68, 89, 178, 356, 1513, 1583, 2221, 3026, 3166, 4442, 6052, 6332, 8884, 26911, 37757, 53822, 75514, 107644, 140887, 151028, 197669, 281774, 395338, 563548, 790676, 2395079, 3360373, 3515843, 4790158, 6720746, 7031686, 9580316, 13441492, 14063372, 59769331, 119538662, 239077324, 312910027, 625820054, 1251640108, 5319470459, 10638940918, 21277881836]

約数ペア:

[(1, 21277881836), (2, 10638940918), (4, 5319470459), (17, 1251640108), (34, 625820054), (68, 312910027), (89, 239077324), (178, 119538662), (356, 59769331), (1513, 14063372), (1583, 13441492), (2221, 9580316), (3026, 7031686), (3166, 6720746), (4442, 4790158), (6052, 3515843), (6332, 3360373), (8884, 2395079), (26911, 790676), (37757, 563548), (53822, 395338), (75514, 281774), (107644, 197669), (140887, 151028)]