20782901384

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{375251}}^1$

素因数の和:375330

約数の個数: 64

約数和(自身を含む): 47551933440

約数和(自身を除く): 26769032056

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 43, 46, 56, 86, 92, 161, 172, 184, 301, 322, 344, 602, 644, 989, 1204, 1288, 1978, 2408, 3956, 6923, 7912, 13846, 27692, 55384, 375251, 750502, 1501004, 2626757, 3002008, 5253514, 8630773, 10507028, 16135793, 17261546, 21014056, 32271586, 34523092, 60415411, 64543172, 69046184, 112950551, 120830822, 129086344, 225901102, 241661644, 371123239, 451802204, 483323288, 742246478, 903604408, 1484492956, 2597862673, 2968985912, 5195725346, 10391450692, 20782901384]

約数ペア:

[(1, 20782901384), (2, 10391450692), (4, 5195725346), (7, 2968985912), (8, 2597862673), (14, 1484492956), (23, 903604408), (28, 742246478), (43, 483323288), (46, 451802204), (56, 371123239), (86, 241661644), (92, 225901102), (161, 129086344), (172, 120830822), (184, 112950551), (301, 69046184), (322, 64543172), (344, 60415411), (602, 34523092), (644, 32271586), (989, 21014056), (1204, 17261546), (1288, 16135793), (1978, 10507028), (2408, 8630773), (3956, 5253514), (6923, 3002008), (7912, 2626757), (13846, 1501004), (27692, 750502), (55384, 375251)]