20846340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{647}}^1$

素因数の和:841

約数の個数: 72

約数和(自身を含む): 63685440

約数和(自身を除く): 42839100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 179, 180, 358, 537, 647, 716, 895, 1074, 1294, 1611, 1790, 1941, 2148, 2588, 2685, 3222, 3235, 3580, 3882, 5370, 5823, 6444, 6470, 7764, 8055, 9705, 10740, 11646, 12940, 16110, 19410, 23292, 29115, 32220, 38820, 58230, 115813, 116460, 231626, 347439, 463252, 579065, 694878, 1042317, 1158130, 1389756, 1737195, 2084634, 2316260, 3474390, 4169268, 5211585, 6948780, 10423170, 20846340]

約数ペア:

[(1, 20846340), (2, 10423170), (3, 6948780), (4, 5211585), (5, 4169268), (6, 3474390), (9, 2316260), (10, 2084634), (12, 1737195), (15, 1389756), (18, 1158130), (20, 1042317), (30, 694878), (36, 579065), (45, 463252), (60, 347439), (90, 231626), (179, 116460), (180, 115813), (358, 58230), (537, 38820), (647, 32220), (716, 29115), (895, 23292), (1074, 19410), (1294, 16110), (1611, 12940), (1790, 11646), (1941, 10740), (2148, 9705), (2588, 8055), (2685, 7764), (3222, 6470), (3235, 6444), (3580, 5823), (3882, 5370)]