81322480

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{229}}^1$

素因数の和:458

約数の個数: 80

約数和(自身を含む): 199183680

約数和(自身を除く): 117861200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 193, 229, 230, 368, 386, 458, 460, 772, 916, 920, 965, 1145, 1544, 1832, 1840, 1930, 2290, 3088, 3664, 3860, 4439, 4580, 5267, 7720, 8878, 9160, 10534, 15440, 17756, 18320, 21068, 22195, 26335, 35512, 42136, 44197, 44390, 52670, 71024, 84272, 88394, 88780, 105340, 176788, 177560, 210680, 220985, 353576, 355120, 421360, 441970, 707152, 883940, 1016531, 1767880, 2033062, 3535760, 4066124, 5082655, 8132248, 10165310, 16264496, 20330620, 40661240, 81322480]

約数ペア:

[(1, 81322480), (2, 40661240), (4, 20330620), (5, 16264496), (8, 10165310), (10, 8132248), (16, 5082655), (20, 4066124), (23, 3535760), (40, 2033062), (46, 1767880), (80, 1016531), (92, 883940), (115, 707152), (184, 441970), (193, 421360), (229, 355120), (230, 353576), (368, 220985), (386, 210680), (458, 177560), (460, 176788), (772, 105340), (916, 88780), (920, 88394), (965, 84272), (1145, 71024), (1544, 52670), (1832, 44390), (1840, 44197), (1930, 42136), (2290, 35512), (3088, 26335), (3664, 22195), (3860, 21068), (4439, 18320), (4580, 17756), (5267, 15440), (7720, 10534), (8878, 9160)]