29988980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{431}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 74462976

約数和(自身を除く): 44473996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 431, 490, 497, 710, 862, 980, 994, 1420, 1724, 1988, 2155, 2485, 3017, 3479, 4310, 4970, 6034, 6958, 8620, 9940, 12068, 13916, 15085, 17395, 21119, 30170, 30601, 34790, 42238, 60340, 61202, 69580, 84476, 105595, 122404, 153005, 211190, 214207, 306010, 422380, 428414, 612020, 856828, 1071035, 1499449, 2142070, 2998898, 4284140, 5997796, 7497245, 14994490, 29988980]

約数ペア:

[(1, 29988980), (2, 14994490), (4, 7497245), (5, 5997796), (7, 4284140), (10, 2998898), (14, 2142070), (20, 1499449), (28, 1071035), (35, 856828), (49, 612020), (70, 428414), (71, 422380), (98, 306010), (140, 214207), (142, 211190), (196, 153005), (245, 122404), (284, 105595), (355, 84476), (431, 69580), (490, 61202), (497, 60340), (710, 42238), (862, 34790), (980, 30601), (994, 30170), (1420, 21119), (1724, 17395), (1988, 15085), (2155, 13916), (2485, 12068), (3017, 9940), (3479, 8620), (4310, 6958), (4970, 6034)]