20755372

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 43868720

約数和(自身を除く): 23113348

約数列:

[1, 2, 4, 11, 19, 22, 37, 38, 44, 61, 74, 76, 121, 122, 148, 209, 242, 244, 407, 418, 484, 671, 703, 814, 836, 1159, 1342, 1406, 1628, 2257, 2299, 2318, 2684, 2812, 4477, 4514, 4598, 4636, 7381, 7733, 8954, 9028, 9196, 12749, 14762, 15466, 17908, 24827, 25498, 29524, 30932, 42883, 49654, 50996, 85063, 85766, 99308, 140239, 170126, 171532, 273097, 280478, 340252, 471713, 546194, 560956, 943426, 1092388, 1886852, 5188843, 10377686, 20755372]

約数ペア:

[(1, 20755372), (2, 10377686), (4, 5188843), (11, 1886852), (19, 1092388), (22, 943426), (37, 560956), (38, 546194), (44, 471713), (61, 340252), (74, 280478), (76, 273097), (121, 171532), (122, 170126), (148, 140239), (209, 99308), (242, 85766), (244, 85063), (407, 50996), (418, 49654), (484, 42883), (671, 30932), (703, 29524), (814, 25498), (836, 24827), (1159, 17908), (1342, 15466), (1406, 14762), (1628, 12749), (2257, 9196), (2299, 9028), (2318, 8954), (2684, 7733), (2812, 7381), (4477, 4636), (4514, 4598)]