405290520

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{19751}}^1$

素因数の和:19790

約数の個数: 128

約数和(自身を含む): 1422144000

約数和(自身を除く): 1016853480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1026, 1080, 1140, 1368, 1710, 2052, 2280, 2565, 3420, 4104, 5130, 6840, 10260, 19751, 20520, 39502, 59253, 79004, 98755, 118506, 158008, 177759, 197510, 237012, 296265, 355518, 375269, 395020, 474024, 533277, 592530, 711036, 750538, 790040, 888795, 1066554, 1125807, 1185060, 1422072, 1501076, 1777590, 1876345, 2133108, 2251614, 2370120, 2666385, 3002152, 3377421, 3555180, 3752690, 4266216, 4503228, 5332770, 5629035, 6754842, 7110360, 7505380, 9006456, 10132263, 10665540, 11258070, 13509684, 15010760, 16887105, 20264526, 21331080, 22516140, 27019368, 33774210, 40529052, 45032280, 50661315, 67548420, 81058104, 101322630, 135096840, 202645260, 405290520]

約数ペア:

[(1, 405290520), (2, 202645260), (3, 135096840), (4, 101322630), (5, 81058104), (6, 67548420), (8, 50661315), (9, 45032280), (10, 40529052), (12, 33774210), (15, 27019368), (18, 22516140), (19, 21331080), (20, 20264526), (24, 16887105), (27, 15010760), (30, 13509684), (36, 11258070), (38, 10665540), (40, 10132263), (45, 9006456), (54, 7505380), (57, 7110360), (60, 6754842), (72, 5629035), (76, 5332770), (90, 4503228), (95, 4266216), (108, 3752690), (114, 3555180), (120, 3377421), (135, 3002152), (152, 2666385), (171, 2370120), (180, 2251614), (190, 2133108), (216, 1876345), (228, 1777590), (270, 1501076), (285, 1422072), (342, 1185060), (360, 1125807), (380, 1066554), (456, 888795), (513, 790040), (540, 750538), (570, 711036), (684, 592530), (760, 533277), (855, 474024), (1026, 395020), (1080, 375269), (1140, 355518), (1368, 296265), (1710, 237012), (2052, 197510), (2280, 177759), (2565, 158008), (3420, 118506), (4104, 98755), (5130, 79004), (6840, 59253), (10260, 39502), (19751, 20520)]