21393684

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2689}}^1$

素因数の和:2729

約数の個数: 72

約数和(自身を含む): 61687080

約数和(自身を除く): 40293396

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 2689, 3978, 5378, 7956, 8067, 10756, 16134, 24201, 32268, 34957, 45713, 48402, 69914, 91426, 96804, 104871, 137139, 139828, 182852, 209742, 274278, 314613, 411417, 419484, 548556, 594269, 629226, 822834, 1188538, 1258452, 1645668, 1782807, 2377076, 3565614, 5348421, 7131228, 10696842, 21393684]

約数ペア:

[(1, 21393684), (2, 10696842), (3, 7131228), (4, 5348421), (6, 3565614), (9, 2377076), (12, 1782807), (13, 1645668), (17, 1258452), (18, 1188538), (26, 822834), (34, 629226), (36, 594269), (39, 548556), (51, 419484), (52, 411417), (68, 314613), (78, 274278), (102, 209742), (117, 182852), (153, 139828), (156, 137139), (204, 104871), (221, 96804), (234, 91426), (306, 69914), (442, 48402), (468, 45713), (612, 34957), (663, 32268), (884, 24201), (1326, 16134), (1989, 10756), (2652, 8067), (2689, 7956), (3978, 5378)]