123213840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16561}}^1$

素因数の和:16608

約数の個数: 80

約数和(自身を含む): 394308096

約数和(自身を除く): 271094256

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 3720, 7440, 16561, 33122, 49683, 66244, 82805, 99366, 132488, 165610, 198732, 248415, 264976, 331220, 397464, 496830, 513391, 662440, 794928, 993660, 1026782, 1324880, 1540173, 1987320, 2053564, 2566955, 3080346, 3974640, 4107128, 5133910, 6160692, 7700865, 8214256, 10267820, 12321384, 15401730, 20535640, 24642768, 30803460, 41071280, 61606920, 123213840]

約数ペア:

[(1, 123213840), (2, 61606920), (3, 41071280), (4, 30803460), (5, 24642768), (6, 20535640), (8, 15401730), (10, 12321384), (12, 10267820), (15, 8214256), (16, 7700865), (20, 6160692), (24, 5133910), (30, 4107128), (31, 3974640), (40, 3080346), (48, 2566955), (60, 2053564), (62, 1987320), (80, 1540173), (93, 1324880), (120, 1026782), (124, 993660), (155, 794928), (186, 662440), (240, 513391), (248, 496830), (310, 397464), (372, 331220), (465, 264976), (496, 248415), (620, 198732), (744, 165610), (930, 132488), (1240, 99366), (1488, 82805), (1860, 66244), (2480, 49683), (3720, 33122), (7440, 16561)]