20809908

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:322

約数の個数: 108

約数和(自身を含む): 62741952

約数和(自身を除く): 41932044

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 47, 49, 63, 84, 94, 98, 126, 141, 147, 188, 196, 251, 252, 282, 294, 329, 423, 441, 502, 564, 588, 658, 753, 846, 882, 987, 1004, 1316, 1506, 1692, 1757, 1764, 1974, 2259, 2303, 2961, 3012, 3514, 3948, 4518, 4606, 5271, 5922, 6909, 7028, 9036, 9212, 10542, 11797, 11844, 12299, 13818, 15813, 20727, 21084, 23594, 24598, 27636, 31626, 35391, 36897, 41454, 47188, 49196, 63252, 70782, 73794, 82579, 82908, 106173, 110691, 141564, 147588, 165158, 212346, 221382, 247737, 330316, 424692, 442764, 495474, 578053, 743211, 990948, 1156106, 1486422, 1734159, 2312212, 2972844, 3468318, 5202477, 6936636, 10404954, 20809908]

約数ペア:

[(1, 20809908), (2, 10404954), (3, 6936636), (4, 5202477), (6, 3468318), (7, 2972844), (9, 2312212), (12, 1734159), (14, 1486422), (18, 1156106), (21, 990948), (28, 743211), (36, 578053), (42, 495474), (47, 442764), (49, 424692), (63, 330316), (84, 247737), (94, 221382), (98, 212346), (126, 165158), (141, 147588), (147, 141564), (188, 110691), (196, 106173), (251, 82908), (252, 82579), (282, 73794), (294, 70782), (329, 63252), (423, 49196), (441, 47188), (502, 41454), (564, 36897), (588, 35391), (658, 31626), (753, 27636), (846, 24598), (882, 23594), (987, 21084), (1004, 20727), (1316, 15813), (1506, 13818), (1692, 12299), (1757, 11844), (1764, 11797), (1974, 10542), (2259, 9212), (2303, 9036), (2961, 7028), (3012, 6909), (3514, 5922), (3948, 5271), (4518, 4606)]