388956780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{5443}}^1$

素因数の和:5855

約数の個数: 72

約数和(自身を含む): 1183024752

約数和(自身を除く): 794067972

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 397, 794, 1191, 1588, 1985, 2382, 3573, 3970, 4764, 5443, 5955, 7146, 7940, 10886, 11910, 14292, 16329, 17865, 21772, 23820, 27215, 32658, 35730, 48987, 54430, 65316, 71460, 81645, 97974, 108860, 163290, 195948, 244935, 326580, 489870, 979740, 2160871, 4321742, 6482613, 8643484, 10804355, 12965226, 19447839, 21608710, 25930452, 32413065, 38895678, 43217420, 64826130, 77791356, 97239195, 129652260, 194478390, 388956780]

約数ペア:

[(1, 388956780), (2, 194478390), (3, 129652260), (4, 97239195), (5, 77791356), (6, 64826130), (9, 43217420), (10, 38895678), (12, 32413065), (15, 25930452), (18, 21608710), (20, 19447839), (30, 12965226), (36, 10804355), (45, 8643484), (60, 6482613), (90, 4321742), (180, 2160871), (397, 979740), (794, 489870), (1191, 326580), (1588, 244935), (1985, 195948), (2382, 163290), (3573, 108860), (3970, 97974), (4764, 81645), (5443, 71460), (5955, 65316), (7146, 54430), (7940, 48987), (10886, 35730), (11910, 32658), (14292, 27215), (16329, 23820), (17865, 21772)]