18870880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:141

約数の個数: 144

約数和(自身を含む): 54295920

約数和(自身を除く): 35425040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 49, 56, 58, 70, 80, 83, 98, 112, 116, 140, 145, 160, 166, 196, 203, 224, 232, 245, 280, 290, 332, 392, 406, 415, 464, 490, 560, 580, 581, 664, 784, 812, 830, 928, 980, 1015, 1120, 1160, 1162, 1328, 1421, 1568, 1624, 1660, 1960, 2030, 2320, 2324, 2407, 2656, 2842, 2905, 3248, 3320, 3920, 4060, 4067, 4640, 4648, 4814, 5684, 5810, 6496, 6640, 7105, 7840, 8120, 8134, 9296, 9628, 11368, 11620, 12035, 13280, 14210, 16240, 16268, 16849, 18592, 19256, 20335, 22736, 23240, 24070, 28420, 32480, 32536, 33698, 38512, 40670, 45472, 46480, 48140, 56840, 65072, 67396, 77024, 81340, 84245, 92960, 96280, 113680, 117943, 130144, 134792, 162680, 168490, 192560, 227360, 235886, 269584, 325360, 336980, 385120, 471772, 539168, 589715, 650720, 673960, 943544, 1179430, 1347920, 1887088, 2358860, 2695840, 3774176, 4717720, 9435440, 18870880]

約数ペア:

[(1, 18870880), (2, 9435440), (4, 4717720), (5, 3774176), (7, 2695840), (8, 2358860), (10, 1887088), (14, 1347920), (16, 1179430), (20, 943544), (28, 673960), (29, 650720), (32, 589715), (35, 539168), (40, 471772), (49, 385120), (56, 336980), (58, 325360), (70, 269584), (80, 235886), (83, 227360), (98, 192560), (112, 168490), (116, 162680), (140, 134792), (145, 130144), (160, 117943), (166, 113680), (196, 96280), (203, 92960), (224, 84245), (232, 81340), (245, 77024), (280, 67396), (290, 65072), (332, 56840), (392, 48140), (406, 46480), (415, 45472), (464, 40670), (490, 38512), (560, 33698), (580, 32536), (581, 32480), (664, 28420), (784, 24070), (812, 23240), (830, 22736), (928, 20335), (980, 19256), (1015, 18592), (1120, 16849), (1160, 16268), (1162, 16240), (1328, 14210), (1421, 13280), (1568, 12035), (1624, 11620), (1660, 11368), (1960, 9628), (2030, 9296), (2320, 8134), (2324, 8120), (2407, 7840), (2656, 7105), (2842, 6640), (2905, 6496), (3248, 5810), (3320, 5684), (3920, 4814), (4060, 4648), (4067, 4640)]