20844540

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4289}}^1$

素因数の和:4313

約数の個数: 72

約数和(自身を含む): 65585520

約数和(自身を除く): 44740980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4289, 4860, 8578, 12867, 17156, 21445, 25734, 38601, 42890, 51468, 64335, 77202, 85780, 115803, 128670, 154404, 193005, 231606, 257340, 347409, 386010, 463212, 579015, 694818, 772020, 1042227, 1158030, 1389636, 1737045, 2084454, 2316060, 3474090, 4168908, 5211135, 6948180, 10422270, 20844540]

約数ペア:

[(1, 20844540), (2, 10422270), (3, 6948180), (4, 5211135), (5, 4168908), (6, 3474090), (9, 2316060), (10, 2084454), (12, 1737045), (15, 1389636), (18, 1158030), (20, 1042227), (27, 772020), (30, 694818), (36, 579015), (45, 463212), (54, 386010), (60, 347409), (81, 257340), (90, 231606), (108, 193005), (135, 154404), (162, 128670), (180, 115803), (243, 85780), (270, 77202), (324, 64335), (405, 51468), (486, 42890), (540, 38601), (810, 25734), (972, 21445), (1215, 17156), (1620, 12867), (2430, 8578), (4289, 4860)]