816427720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2179}}^1$

素因数の和:2255

約数の個数: 128

約数和(自身を含む): 2118960000

約数和(自身を除く): 1302532280

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 29, 34, 38, 40, 58, 68, 76, 85, 95, 116, 136, 145, 152, 170, 190, 232, 290, 323, 340, 380, 493, 551, 580, 646, 680, 760, 986, 1102, 1160, 1292, 1615, 1972, 2179, 2204, 2465, 2584, 2755, 3230, 3944, 4358, 4408, 4930, 5510, 6460, 8716, 9367, 9860, 10895, 11020, 12920, 17432, 18734, 19720, 21790, 22040, 37043, 37468, 41401, 43580, 46835, 63191, 74086, 74936, 82802, 87160, 93670, 126382, 148172, 165604, 185215, 187340, 207005, 252764, 296344, 315955, 331208, 370430, 374680, 414010, 505528, 631910, 703817, 740860, 828020, 1074247, 1200629, 1263820, 1407634, 1481720, 1656040, 2148494, 2401258, 2527640, 2815268, 3519085, 4296988, 4802516, 5371235, 5630536, 6003145, 7038170, 8593976, 9605032, 10742470, 12006290, 14076340, 20410693, 21484940, 24012580, 28152680, 40821386, 42969880, 48025160, 81642772, 102053465, 163285544, 204106930, 408213860, 816427720]

約数ペア:

[(1, 816427720), (2, 408213860), (4, 204106930), (5, 163285544), (8, 102053465), (10, 81642772), (17, 48025160), (19, 42969880), (20, 40821386), (29, 28152680), (34, 24012580), (38, 21484940), (40, 20410693), (58, 14076340), (68, 12006290), (76, 10742470), (85, 9605032), (95, 8593976), (116, 7038170), (136, 6003145), (145, 5630536), (152, 5371235), (170, 4802516), (190, 4296988), (232, 3519085), (290, 2815268), (323, 2527640), (340, 2401258), (380, 2148494), (493, 1656040), (551, 1481720), (580, 1407634), (646, 1263820), (680, 1200629), (760, 1074247), (986, 828020), (1102, 740860), (1160, 703817), (1292, 631910), (1615, 505528), (1972, 414010), (2179, 374680), (2204, 370430), (2465, 331208), (2584, 315955), (2755, 296344), (3230, 252764), (3944, 207005), (4358, 187340), (4408, 185215), (4930, 165604), (5510, 148172), (6460, 126382), (8716, 93670), (9367, 87160), (9860, 82802), (10895, 74936), (11020, 74086), (12920, 63191), (17432, 46835), (18734, 43580), (19720, 41401), (21790, 37468), (22040, 37043)]