820465840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{7039}}^1$

素因数の和:7130

約数の個数: 80

約数和(自身を含む): 2011299840

約数和(自身を除く): 1190834000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 47, 62, 80, 94, 124, 155, 188, 235, 248, 310, 376, 470, 496, 620, 752, 940, 1240, 1457, 1880, 2480, 2914, 3760, 5828, 7039, 7285, 11656, 14078, 14570, 23312, 28156, 29140, 35195, 56312, 58280, 70390, 112624, 116560, 140780, 218209, 281560, 330833, 436418, 563120, 661666, 872836, 1091045, 1323332, 1654165, 1745672, 2182090, 2646664, 3308330, 3491344, 4364180, 5293328, 6616660, 8728360, 10255823, 13233320, 17456720, 20511646, 26466640, 41023292, 51279115, 82046584, 102558230, 164093168, 205116460, 410232920, 820465840]

約数ペア:

[(1, 820465840), (2, 410232920), (4, 205116460), (5, 164093168), (8, 102558230), (10, 82046584), (16, 51279115), (20, 41023292), (31, 26466640), (40, 20511646), (47, 17456720), (62, 13233320), (80, 10255823), (94, 8728360), (124, 6616660), (155, 5293328), (188, 4364180), (235, 3491344), (248, 3308330), (310, 2646664), (376, 2182090), (470, 1745672), (496, 1654165), (620, 1323332), (752, 1091045), (940, 872836), (1240, 661666), (1457, 563120), (1880, 436418), (2480, 330833), (2914, 281560), (3760, 218209), (5828, 140780), (7039, 116560), (7285, 112624), (11656, 70390), (14078, 58280), (14570, 56312), (23312, 35195), (28156, 29140)]