21501540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6287}}^1$

素因数の和:6321

約数の個数: 72

約数和(自身を含む): 68664960

約数和(自身を除く): 47163420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 6287, 12574, 18861, 25148, 31435, 37722, 56583, 62870, 75444, 94305, 113166, 119453, 125740, 188610, 226332, 238906, 282915, 358359, 377220, 477812, 565830, 597265, 716718, 1075077, 1131660, 1194530, 1433436, 1791795, 2150154, 2389060, 3583590, 4300308, 5375385, 7167180, 10750770, 21501540]

約数ペア:

[(1, 21501540), (2, 10750770), (3, 7167180), (4, 5375385), (5, 4300308), (6, 3583590), (9, 2389060), (10, 2150154), (12, 1791795), (15, 1433436), (18, 1194530), (19, 1131660), (20, 1075077), (30, 716718), (36, 597265), (38, 565830), (45, 477812), (57, 377220), (60, 358359), (76, 282915), (90, 238906), (95, 226332), (114, 188610), (171, 125740), (180, 119453), (190, 113166), (228, 94305), (285, 75444), (342, 62870), (380, 56583), (570, 37722), (684, 31435), (855, 25148), (1140, 18861), (1710, 12574), (3420, 6287)]