291224020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:305

約数の個数: 96

約数和(自身を含む): 665280000

約数和(自身を除く): 374055980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 89, 95, 109, 158, 178, 190, 218, 316, 356, 380, 395, 436, 445, 545, 790, 890, 1090, 1501, 1580, 1691, 1780, 2071, 2180, 3002, 3382, 4142, 6004, 6764, 7031, 7505, 8284, 8455, 8611, 9701, 10355, 14062, 15010, 16910, 17222, 19402, 20710, 28124, 30020, 33820, 34444, 35155, 38804, 41420, 43055, 48505, 70310, 86110, 97010, 133589, 140620, 163609, 172220, 184319, 194020, 267178, 327218, 368638, 534356, 654436, 667945, 737276, 766379, 818045, 921595, 1335890, 1532758, 1636090, 1843190, 2671780, 3065516, 3272180, 3686380, 3831895, 7663790, 14561201, 15327580, 29122402, 58244804, 72806005, 145612010, 291224020]

約数ペア:

[(1, 291224020), (2, 145612010), (4, 72806005), (5, 58244804), (10, 29122402), (19, 15327580), (20, 14561201), (38, 7663790), (76, 3831895), (79, 3686380), (89, 3272180), (95, 3065516), (109, 2671780), (158, 1843190), (178, 1636090), (190, 1532758), (218, 1335890), (316, 921595), (356, 818045), (380, 766379), (395, 737276), (436, 667945), (445, 654436), (545, 534356), (790, 368638), (890, 327218), (1090, 267178), (1501, 194020), (1580, 184319), (1691, 172220), (1780, 163609), (2071, 140620), (2180, 133589), (3002, 97010), (3382, 86110), (4142, 70310), (6004, 48505), (6764, 43055), (7031, 41420), (7505, 38804), (8284, 35155), (8455, 34444), (8611, 33820), (9701, 30020), (10355, 28124), (14062, 20710), (15010, 19402), (16910, 17222)]