21235788

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4957}}^1$

素因数の和:4991

約数の個数: 72

約数和(自身を含む): 64969632

約数和(自身を除く): 43733844

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 4957, 9914, 14871, 19828, 29742, 34699, 44613, 59484, 69398, 84269, 89226, 104097, 138796, 168538, 178452, 208194, 252807, 312291, 337076, 416388, 505614, 589883, 624582, 758421, 1011228, 1179766, 1249164, 1516842, 1769649, 2359532, 3033684, 3539298, 5308947, 7078596, 10617894, 21235788]

約数ペア:

[(1, 21235788), (2, 10617894), (3, 7078596), (4, 5308947), (6, 3539298), (7, 3033684), (9, 2359532), (12, 1769649), (14, 1516842), (17, 1249164), (18, 1179766), (21, 1011228), (28, 758421), (34, 624582), (36, 589883), (42, 505614), (51, 416388), (63, 337076), (68, 312291), (84, 252807), (102, 208194), (119, 178452), (126, 168538), (153, 138796), (204, 104097), (238, 89226), (252, 84269), (306, 69398), (357, 59484), (476, 44613), (612, 34699), (714, 29742), (1071, 19828), (1428, 14871), (2142, 9914), (4284, 4957)]