81534720

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1249}}^1$

素因数の和:1290

約数の個数: 144

約数和(自身を含む): 275940000

約数和(自身を除く): 194405280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 128, 136, 160, 170, 192, 204, 240, 255, 256, 272, 320, 340, 384, 408, 480, 510, 544, 640, 680, 768, 816, 960, 1020, 1088, 1249, 1280, 1360, 1632, 1920, 2040, 2176, 2498, 2720, 3264, 3747, 3840, 4080, 4352, 4996, 5440, 6245, 6528, 7494, 8160, 9992, 10880, 12490, 13056, 14988, 16320, 18735, 19984, 21233, 21760, 24980, 29976, 32640, 37470, 39968, 42466, 49960, 59952, 63699, 65280, 74940, 79936, 84932, 99920, 106165, 119904, 127398, 149880, 159872, 169864, 199840, 212330, 239808, 254796, 299760, 318495, 319744, 339728, 399680, 424660, 479616, 509592, 599520, 636990, 679456, 799360, 849320, 959232, 1019184, 1199040, 1273980, 1358912, 1598720, 1698640, 2038368, 2398080, 2547960, 2717824, 3397280, 4076736, 4796160, 5095920, 5435648, 6794560, 8153472, 10191840, 13589120, 16306944, 20383680, 27178240, 40767360, 81534720]

約数ペア:

[(1, 81534720), (2, 40767360), (3, 27178240), (4, 20383680), (5, 16306944), (6, 13589120), (8, 10191840), (10, 8153472), (12, 6794560), (15, 5435648), (16, 5095920), (17, 4796160), (20, 4076736), (24, 3397280), (30, 2717824), (32, 2547960), (34, 2398080), (40, 2038368), (48, 1698640), (51, 1598720), (60, 1358912), (64, 1273980), (68, 1199040), (80, 1019184), (85, 959232), (96, 849320), (102, 799360), (120, 679456), (128, 636990), (136, 599520), (160, 509592), (170, 479616), (192, 424660), (204, 399680), (240, 339728), (255, 319744), (256, 318495), (272, 299760), (320, 254796), (340, 239808), (384, 212330), (408, 199840), (480, 169864), (510, 159872), (544, 149880), (640, 127398), (680, 119904), (768, 106165), (816, 99920), (960, 84932), (1020, 79936), (1088, 74940), (1249, 65280), (1280, 63699), (1360, 59952), (1632, 49960), (1920, 42466), (2040, 39968), (2176, 37470), (2498, 32640), (2720, 29976), (3264, 24980), (3747, 21760), (3840, 21233), (4080, 19984), (4352, 18735), (4996, 16320), (5440, 14988), (6245, 13056), (6528, 12490), (7494, 10880), (8160, 9992)]