21480120

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19889}}^1$

素因数の和:19909

約数の個数: 64

約数和(自身を含む): 71604000

約数和(自身を除く): 50123880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19889, 39778, 59667, 79556, 99445, 119334, 159112, 179001, 198890, 238668, 298335, 358002, 397780, 477336, 537003, 596670, 716004, 795560, 895005, 1074006, 1193340, 1432008, 1790010, 2148012, 2386680, 2685015, 3580020, 4296024, 5370030, 7160040, 10740060, 21480120]

約数ペア:

[(1, 21480120), (2, 10740060), (3, 7160040), (4, 5370030), (5, 4296024), (6, 3580020), (8, 2685015), (9, 2386680), (10, 2148012), (12, 1790010), (15, 1432008), (18, 1193340), (20, 1074006), (24, 895005), (27, 795560), (30, 716004), (36, 596670), (40, 537003), (45, 477336), (54, 397780), (60, 358002), (72, 298335), (90, 238668), (108, 198890), (120, 179001), (135, 159112), (180, 119334), (216, 99445), (270, 79556), (360, 59667), (540, 39778), (1080, 19889)]