198285440

素因数分解:

$2^7\times 5^1\times {\mathrm{491}}^1\times {\mathrm{631}}^1$

素因数の和:1141

約数の個数: 64

約数和(自身を含む): 475744320

約数和(自身を除く): 277458880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 491, 631, 640, 982, 1262, 1964, 2455, 2524, 3155, 3928, 4910, 5048, 6310, 7856, 9820, 10096, 12620, 15712, 19640, 20192, 25240, 31424, 39280, 40384, 50480, 62848, 78560, 80768, 100960, 157120, 201920, 309821, 314240, 403840, 619642, 1239284, 1549105, 2478568, 3098210, 4957136, 6196420, 9914272, 12392840, 19828544, 24785680, 39657088, 49571360, 99142720, 198285440]

約数ペア:

[(1, 198285440), (2, 99142720), (4, 49571360), (5, 39657088), (8, 24785680), (10, 19828544), (16, 12392840), (20, 9914272), (32, 6196420), (40, 4957136), (64, 3098210), (80, 2478568), (128, 1549105), (160, 1239284), (320, 619642), (491, 403840), (631, 314240), (640, 309821), (982, 201920), (1262, 157120), (1964, 100960), (2455, 80768), (2524, 78560), (3155, 62848), (3928, 50480), (4910, 40384), (5048, 39280), (6310, 31424), (7856, 25240), (9820, 20192), (10096, 19640), (12620, 15712)]