20561424

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:504

約数の個数: 80

約数和(自身を含む): 58037952

約数和(自身を除く): 37476528

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 83, 104, 156, 166, 208, 249, 312, 332, 397, 498, 624, 664, 794, 996, 1079, 1191, 1328, 1588, 1992, 2158, 2382, 3176, 3237, 3984, 4316, 4764, 5161, 6352, 6474, 8632, 9528, 10322, 12948, 15483, 17264, 19056, 20644, 25896, 30966, 32951, 41288, 51792, 61932, 65902, 82576, 98853, 123864, 131804, 197706, 247728, 263608, 395412, 428363, 527216, 790824, 856726, 1285089, 1581648, 1713452, 2570178, 3426904, 5140356, 6853808, 10280712, 20561424]

約数ペア:

[(1, 20561424), (2, 10280712), (3, 6853808), (4, 5140356), (6, 3426904), (8, 2570178), (12, 1713452), (13, 1581648), (16, 1285089), (24, 856726), (26, 790824), (39, 527216), (48, 428363), (52, 395412), (78, 263608), (83, 247728), (104, 197706), (156, 131804), (166, 123864), (208, 98853), (249, 82576), (312, 65902), (332, 61932), (397, 51792), (498, 41288), (624, 32951), (664, 30966), (794, 25896), (996, 20644), (1079, 19056), (1191, 17264), (1328, 15483), (1588, 12948), (1992, 10322), (2158, 9528), (2382, 8632), (3176, 6474), (3237, 6352), (3984, 5161), (4316, 4764)]