20820276

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:589

約数の個数: 72

約数和(自身を含む): 56420000

約数和(自身を除く): 35599724

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 61, 76, 114, 122, 171, 183, 228, 244, 342, 366, 499, 549, 684, 732, 998, 1098, 1159, 1497, 1996, 2196, 2318, 2994, 3477, 4491, 4636, 5988, 6954, 8982, 9481, 10431, 13908, 17964, 18962, 20862, 28443, 30439, 37924, 41724, 56886, 60878, 85329, 91317, 113772, 121756, 170658, 182634, 273951, 341316, 365268, 547902, 578341, 1095804, 1156682, 1735023, 2313364, 3470046, 5205069, 6940092, 10410138, 20820276]

約数ペア:

[(1, 20820276), (2, 10410138), (3, 6940092), (4, 5205069), (6, 3470046), (9, 2313364), (12, 1735023), (18, 1156682), (19, 1095804), (36, 578341), (38, 547902), (57, 365268), (61, 341316), (76, 273951), (114, 182634), (122, 170658), (171, 121756), (183, 113772), (228, 91317), (244, 85329), (342, 60878), (366, 56886), (499, 41724), (549, 37924), (684, 30439), (732, 28443), (998, 20862), (1098, 18962), (1159, 17964), (1497, 13908), (1996, 10431), (2196, 9481), (2318, 8982), (2994, 6954), (3477, 5988), (4491, 4636)]