20822580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{3989}}^1$

素因数の和:4033

約数の個数: 72

約数和(自身を含む): 65356200

約数和(自身を除く): 44533620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 3989, 5220, 7978, 11967, 15956, 19945, 23934, 35901, 39890, 47868, 59835, 71802, 79780, 115681, 119670, 143604, 179505, 231362, 239340, 347043, 359010, 462724, 578405, 694086, 718020, 1041129, 1156810, 1388172, 1735215, 2082258, 2313620, 3470430, 4164516, 5205645, 6940860, 10411290, 20822580]

約数ペア:

[(1, 20822580), (2, 10411290), (3, 6940860), (4, 5205645), (5, 4164516), (6, 3470430), (9, 2313620), (10, 2082258), (12, 1735215), (15, 1388172), (18, 1156810), (20, 1041129), (29, 718020), (30, 694086), (36, 578405), (45, 462724), (58, 359010), (60, 347043), (87, 239340), (90, 231362), (116, 179505), (145, 143604), (174, 119670), (180, 115681), (261, 79780), (290, 71802), (348, 59835), (435, 47868), (522, 39890), (580, 35901), (870, 23934), (1044, 19945), (1305, 15956), (1740, 11967), (2610, 7978), (3989, 5220)]