142821220

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{2011}}^1$

素因数の和:2140

約数の個数: 48

約数和(自身を含む): 310298688

約数和(自身を除く): 167477468

約数列:

[1, 2, 4, 5, 10, 20, 53, 67, 106, 134, 212, 265, 268, 335, 530, 670, 1060, 1340, 2011, 3551, 4022, 7102, 8044, 10055, 14204, 17755, 20110, 35510, 40220, 71020, 106583, 134737, 213166, 269474, 426332, 532915, 538948, 673685, 1065830, 1347370, 2131660, 2694740, 7141061, 14282122, 28564244, 35705305, 71410610, 142821220]

約数ペア:

[(1, 142821220), (2, 71410610), (4, 35705305), (5, 28564244), (10, 14282122), (20, 7141061), (53, 2694740), (67, 2131660), (106, 1347370), (134, 1065830), (212, 673685), (265, 538948), (268, 532915), (335, 426332), (530, 269474), (670, 213166), (1060, 134737), (1340, 106583), (2011, 71020), (3551, 40220), (4022, 35510), (7102, 20110), (8044, 17755), (10055, 14204)]