20017558750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{661}}^1\times {\mathrm{3461}}^1$

素因数の和:4151

約数の個数: 80

約数和(自身を含む): 42958323936

約数和(自身を除く): 22940765186

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 125, 175, 250, 350, 625, 661, 875, 1250, 1322, 1750, 3305, 3461, 4375, 4627, 6610, 6922, 8750, 9254, 16525, 17305, 23135, 24227, 33050, 34610, 46270, 48454, 82625, 86525, 115675, 121135, 165250, 173050, 231350, 242270, 413125, 432625, 578375, 605675, 826250, 865250, 1156750, 1211350, 2163125, 2287721, 2891875, 3028375, 4326250, 4575442, 5783750, 6056750, 11438605, 15141875, 16014047, 22877210, 30283750, 32028094, 57193025, 80070235, 114386050, 160140470, 285965125, 400351175, 571930250, 800702350, 1429825625, 2001755875, 2859651250, 4003511750, 10008779375, 20017558750]

約数ペア:

[(1, 20017558750), (2, 10008779375), (5, 4003511750), (7, 2859651250), (10, 2001755875), (14, 1429825625), (25, 800702350), (35, 571930250), (50, 400351175), (70, 285965125), (125, 160140470), (175, 114386050), (250, 80070235), (350, 57193025), (625, 32028094), (661, 30283750), (875, 22877210), (1250, 16014047), (1322, 15141875), (1750, 11438605), (3305, 6056750), (3461, 5783750), (4375, 4575442), (4627, 4326250), (6610, 3028375), (6922, 2891875), (8750, 2287721), (9254, 2163125), (16525, 1211350), (17305, 1156750), (23135, 865250), (24227, 826250), (33050, 605675), (34610, 578375), (46270, 432625), (48454, 413125), (82625, 242270), (86525, 231350), (115675, 173050), (121135, 165250)]