20704572

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:222

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 45339588

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 27, 28, 34, 36, 42, 51, 54, 63, 68, 81, 84, 102, 108, 119, 126, 153, 162, 179, 189, 204, 238, 243, 252, 306, 324, 357, 358, 378, 459, 476, 486, 537, 567, 612, 714, 716, 756, 918, 972, 1071, 1074, 1134, 1253, 1377, 1428, 1611, 1701, 1836, 2142, 2148, 2268, 2506, 2754, 3043, 3213, 3222, 3402, 3759, 4131, 4284, 4833, 5012, 5508, 6086, 6426, 6444, 6804, 7518, 8262, 9129, 9639, 9666, 11277, 12172, 12852, 14499, 15036, 16524, 18258, 19278, 19332, 21301, 22554, 27387, 28917, 28998, 33831, 36516, 38556, 42602, 43497, 45108, 54774, 57834, 57996, 63903, 67662, 82161, 85204, 86994, 101493, 109548, 115668, 127806, 135324, 164322, 173988, 191709, 202986, 246483, 255612, 304479, 328644, 383418, 405972, 492966, 575127, 608958, 739449, 766836, 985932, 1150254, 1217916, 1478898, 1725381, 2300508, 2957796, 3450762, 5176143, 6901524, 10352286, 20704572]

約数ペア:

[(1, 20704572), (2, 10352286), (3, 6901524), (4, 5176143), (6, 3450762), (7, 2957796), (9, 2300508), (12, 1725381), (14, 1478898), (17, 1217916), (18, 1150254), (21, 985932), (27, 766836), (28, 739449), (34, 608958), (36, 575127), (42, 492966), (51, 405972), (54, 383418), (63, 328644), (68, 304479), (81, 255612), (84, 246483), (102, 202986), (108, 191709), (119, 173988), (126, 164322), (153, 135324), (162, 127806), (179, 115668), (189, 109548), (204, 101493), (238, 86994), (243, 85204), (252, 82161), (306, 67662), (324, 63903), (357, 57996), (358, 57834), (378, 54774), (459, 45108), (476, 43497), (486, 42602), (537, 38556), (567, 36516), (612, 33831), (714, 28998), (716, 28917), (756, 27387), (918, 22554), (972, 21301), (1071, 19332), (1074, 19278), (1134, 18258), (1253, 16524), (1377, 15036), (1428, 14499), (1611, 12852), (1701, 12172), (1836, 11277), (2142, 9666), (2148, 9639), (2268, 9129), (2506, 8262), (2754, 7518), (3043, 6804), (3213, 6444), (3222, 6426), (3402, 6086), (3759, 5508), (4131, 5012), (4284, 4833)]