20174879020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{181}}^2\times {\mathrm{751}}^1$

素因数の和:1163

約数の個数: 72

約数和(自身を含む): 43699811904

約数和(自身を除く): 23524932884

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 181, 205, 362, 410, 724, 751, 820, 905, 1502, 1810, 3004, 3620, 3755, 7421, 7510, 14842, 15020, 29684, 30791, 32761, 37105, 61582, 65522, 74210, 123164, 131044, 135931, 148420, 153955, 163805, 271862, 307910, 327610, 543724, 615820, 655220, 679655, 1343201, 1359310, 2686402, 2718620, 5372804, 5573171, 6716005, 11146342, 13432010, 22292684, 24603511, 26864020, 27865855, 49207022, 55731710, 98414044, 111463420, 123017555, 246035110, 492070220, 1008743951, 2017487902, 4034975804, 5043719755, 10087439510, 20174879020]

約数ペア:

[(1, 20174879020), (2, 10087439510), (4, 5043719755), (5, 4034975804), (10, 2017487902), (20, 1008743951), (41, 492070220), (82, 246035110), (164, 123017555), (181, 111463420), (205, 98414044), (362, 55731710), (410, 49207022), (724, 27865855), (751, 26864020), (820, 24603511), (905, 22292684), (1502, 13432010), (1810, 11146342), (3004, 6716005), (3620, 5573171), (3755, 5372804), (7421, 2718620), (7510, 2686402), (14842, 1359310), (15020, 1343201), (29684, 679655), (30791, 655220), (32761, 615820), (37105, 543724), (61582, 327610), (65522, 307910), (74210, 271862), (123164, 163805), (131044, 153955), (135931, 148420)]