21421764

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{503}}^1$

素因数の和:546

約数の個数: 108

約数和(自身を含む): 67144896

約数和(自身を除く): 45723132

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 169, 182, 234, 252, 273, 338, 364, 468, 503, 507, 546, 676, 819, 1006, 1014, 1092, 1183, 1509, 1521, 1638, 2012, 2028, 2366, 3018, 3042, 3276, 3521, 3549, 4527, 4732, 6036, 6084, 6539, 7042, 7098, 9054, 10563, 10647, 13078, 14084, 14196, 18108, 19617, 21126, 21294, 26156, 31689, 39234, 42252, 42588, 45773, 58851, 63378, 78468, 85007, 91546, 117702, 126756, 137319, 170014, 183092, 235404, 255021, 274638, 340028, 411957, 510042, 549276, 595049, 765063, 823914, 1020084, 1190098, 1530126, 1647828, 1785147, 2380196, 3060252, 3570294, 5355441, 7140588, 10710882, 21421764]

約数ペア:

[(1, 21421764), (2, 10710882), (3, 7140588), (4, 5355441), (6, 3570294), (7, 3060252), (9, 2380196), (12, 1785147), (13, 1647828), (14, 1530126), (18, 1190098), (21, 1020084), (26, 823914), (28, 765063), (36, 595049), (39, 549276), (42, 510042), (52, 411957), (63, 340028), (78, 274638), (84, 255021), (91, 235404), (117, 183092), (126, 170014), (156, 137319), (169, 126756), (182, 117702), (234, 91546), (252, 85007), (273, 78468), (338, 63378), (364, 58851), (468, 45773), (503, 42588), (507, 42252), (546, 39234), (676, 31689), (819, 26156), (1006, 21294), (1014, 21126), (1092, 19617), (1183, 18108), (1509, 14196), (1521, 14084), (1638, 13078), (2012, 10647), (2028, 10563), (2366, 9054), (3018, 7098), (3042, 7042), (3276, 6539), (3521, 6084), (3549, 6036), (4527, 4732)]