2019020720

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1\times {\mathrm{1291}}^1$

素因数の和:1590

約数の個数: 80

約数和(自身を含む): 4766828832

約数和(自身を除く): 2747808112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 173, 226, 346, 452, 565, 692, 865, 904, 1130, 1291, 1384, 1730, 1808, 2260, 2582, 2768, 3460, 4520, 5164, 6455, 6920, 9040, 10328, 12910, 13840, 19549, 20656, 25820, 39098, 51640, 78196, 97745, 103280, 145883, 156392, 195490, 223343, 291766, 312784, 390980, 446686, 583532, 729415, 781960, 893372, 1116715, 1167064, 1458830, 1563920, 1786744, 2233430, 2334128, 2917660, 3573488, 4466860, 5835320, 8933720, 11670640, 17867440, 25237759, 50475518, 100951036, 126188795, 201902072, 252377590, 403804144, 504755180, 1009510360, 2019020720]

約数ペア:

[(1, 2019020720), (2, 1009510360), (4, 504755180), (5, 403804144), (8, 252377590), (10, 201902072), (16, 126188795), (20, 100951036), (40, 50475518), (80, 25237759), (113, 17867440), (173, 11670640), (226, 8933720), (346, 5835320), (452, 4466860), (565, 3573488), (692, 2917660), (865, 2334128), (904, 2233430), (1130, 1786744), (1291, 1563920), (1384, 1458830), (1730, 1167064), (1808, 1116715), (2260, 893372), (2582, 781960), (2768, 729415), (3460, 583532), (4520, 446686), (5164, 390980), (6455, 312784), (6920, 291766), (9040, 223343), (10328, 195490), (12910, 156392), (13840, 145883), (19549, 103280), (20656, 97745), (25820, 78196), (39098, 51640)]