21898720

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:212

約数の個数: 96

約数和(自身を含む): 56010528

約数和(自身を除く): 34111808

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 83, 85, 97, 136, 160, 166, 170, 194, 272, 332, 340, 388, 415, 485, 544, 664, 680, 776, 830, 970, 1328, 1360, 1411, 1552, 1649, 1660, 1940, 2656, 2720, 2822, 3104, 3298, 3320, 3880, 5644, 6596, 6640, 7055, 7760, 8051, 8245, 11288, 13192, 13280, 14110, 15520, 16102, 16490, 22576, 26384, 28220, 32204, 32980, 40255, 45152, 52768, 56440, 64408, 65960, 80510, 112880, 128816, 131920, 136867, 161020, 225760, 257632, 263840, 273734, 322040, 547468, 644080, 684335, 1094936, 1288160, 1368670, 2189872, 2737340, 4379744, 5474680, 10949360, 21898720]

約数ペア:

[(1, 21898720), (2, 10949360), (4, 5474680), (5, 4379744), (8, 2737340), (10, 2189872), (16, 1368670), (17, 1288160), (20, 1094936), (32, 684335), (34, 644080), (40, 547468), (68, 322040), (80, 273734), (83, 263840), (85, 257632), (97, 225760), (136, 161020), (160, 136867), (166, 131920), (170, 128816), (194, 112880), (272, 80510), (332, 65960), (340, 64408), (388, 56440), (415, 52768), (485, 45152), (544, 40255), (664, 32980), (680, 32204), (776, 28220), (830, 26384), (970, 22576), (1328, 16490), (1360, 16102), (1411, 15520), (1552, 14110), (1649, 13280), (1660, 13192), (1940, 11288), (2656, 8245), (2720, 8051), (2822, 7760), (3104, 7055), (3298, 6640), (3320, 6596), (3880, 5644)]