20131296220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{911}}^1\times {\mathrm{22549}}^1$

素因数の和:23483

約数の個数: 72

約数和(自身を含む): 49234046400

約数和(自身を除く): 29102750180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 911, 980, 1822, 3644, 4555, 6377, 9110, 12754, 18220, 22549, 25508, 31885, 44639, 45098, 63770, 89278, 90196, 112745, 127540, 157843, 178556, 223195, 225490, 315686, 446390, 450980, 631372, 789215, 892780, 1104901, 1578430, 2209802, 3156860, 4419604, 5524505, 11049010, 20542139, 22098020, 41084278, 82168556, 102710695, 143794973, 205421390, 287589946, 410842780, 575179892, 718974865, 1006564811, 1437949730, 2013129622, 2875899460, 4026259244, 5032824055, 10065648110, 20131296220]

約数ペア:

[(1, 20131296220), (2, 10065648110), (4, 5032824055), (5, 4026259244), (7, 2875899460), (10, 2013129622), (14, 1437949730), (20, 1006564811), (28, 718974865), (35, 575179892), (49, 410842780), (70, 287589946), (98, 205421390), (140, 143794973), (196, 102710695), (245, 82168556), (490, 41084278), (911, 22098020), (980, 20542139), (1822, 11049010), (3644, 5524505), (4555, 4419604), (6377, 3156860), (9110, 2209802), (12754, 1578430), (18220, 1104901), (22549, 892780), (25508, 789215), (31885, 631372), (44639, 450980), (45098, 446390), (63770, 315686), (89278, 225490), (90196, 223195), (112745, 178556), (127540, 157843)]