21318480

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1021}}^1$

素因数の和:1069

約数の個数: 120

約数和(自身を含む): 74135880

約数和(自身を除く): 52817400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 116, 120, 144, 145, 174, 180, 232, 240, 261, 290, 348, 360, 435, 464, 522, 580, 696, 720, 870, 1021, 1044, 1160, 1305, 1392, 1740, 2042, 2088, 2320, 2610, 3063, 3480, 4084, 4176, 5105, 5220, 6126, 6960, 8168, 9189, 10210, 10440, 12252, 15315, 16336, 18378, 20420, 20880, 24504, 29609, 30630, 36756, 40840, 45945, 49008, 59218, 61260, 73512, 81680, 88827, 91890, 118436, 122520, 147024, 148045, 177654, 183780, 236872, 245040, 266481, 296090, 355308, 367560, 444135, 473744, 532962, 592180, 710616, 735120, 888270, 1065924, 1184360, 1332405, 1421232, 1776540, 2131848, 2368720, 2664810, 3553080, 4263696, 5329620, 7106160, 10659240, 21318480]

約数ペア:

[(1, 21318480), (2, 10659240), (3, 7106160), (4, 5329620), (5, 4263696), (6, 3553080), (8, 2664810), (9, 2368720), (10, 2131848), (12, 1776540), (15, 1421232), (16, 1332405), (18, 1184360), (20, 1065924), (24, 888270), (29, 735120), (30, 710616), (36, 592180), (40, 532962), (45, 473744), (48, 444135), (58, 367560), (60, 355308), (72, 296090), (80, 266481), (87, 245040), (90, 236872), (116, 183780), (120, 177654), (144, 148045), (145, 147024), (174, 122520), (180, 118436), (232, 91890), (240, 88827), (261, 81680), (290, 73512), (348, 61260), (360, 59218), (435, 49008), (464, 45945), (522, 40840), (580, 36756), (696, 30630), (720, 29609), (870, 24504), (1021, 20880), (1044, 20420), (1160, 18378), (1305, 16336), (1392, 15315), (1740, 12252), (2042, 10440), (2088, 10210), (2320, 9189), (2610, 8168), (3063, 6960), (3480, 6126), (4084, 5220), (4176, 5105)]