2808906280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:875

約数の個数: 128

約数和(自身を含む): 6863616000

約数和(自身を除く): 4054709720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 149, 155, 184, 230, 248, 298, 310, 460, 596, 620, 661, 713, 745, 920, 1192, 1240, 1322, 1426, 1490, 2644, 2852, 2980, 3305, 3427, 3565, 4619, 5288, 5704, 5960, 6610, 6854, 7130, 9238, 13220, 13708, 14260, 15203, 17135, 18476, 20491, 23095, 26440, 27416, 28520, 30406, 34270, 36952, 40982, 46190, 60812, 68540, 76015, 81964, 92380, 98489, 102455, 106237, 121624, 137080, 152030, 163928, 184760, 196978, 204910, 212474, 304060, 393956, 409820, 424948, 471293, 492445, 531185, 608120, 787912, 819640, 849896, 942586, 984890, 1062370, 1885172, 1969780, 2124740, 2265247, 2356465, 3053159, 3770344, 3939560, 4249480, 4530494, 4712930, 6106318, 9060988, 9425860, 11326235, 12212636, 15265795, 18121976, 18851720, 22652470, 24425272, 30531590, 45304940, 61063180, 70222657, 90609880, 122126360, 140445314, 280890628, 351113285, 561781256, 702226570, 1404453140, 2808906280]

約数ペア:

[(1, 2808906280), (2, 1404453140), (4, 702226570), (5, 561781256), (8, 351113285), (10, 280890628), (20, 140445314), (23, 122126360), (31, 90609880), (40, 70222657), (46, 61063180), (62, 45304940), (92, 30531590), (115, 24425272), (124, 22652470), (149, 18851720), (155, 18121976), (184, 15265795), (230, 12212636), (248, 11326235), (298, 9425860), (310, 9060988), (460, 6106318), (596, 4712930), (620, 4530494), (661, 4249480), (713, 3939560), (745, 3770344), (920, 3053159), (1192, 2356465), (1240, 2265247), (1322, 2124740), (1426, 1969780), (1490, 1885172), (2644, 1062370), (2852, 984890), (2980, 942586), (3305, 849896), (3427, 819640), (3565, 787912), (4619, 608120), (5288, 531185), (5704, 492445), (5960, 471293), (6610, 424948), (6854, 409820), (7130, 393956), (9238, 304060), (13220, 212474), (13708, 204910), (14260, 196978), (15203, 184760), (17135, 163928), (18476, 152030), (20491, 137080), (23095, 121624), (26440, 106237), (27416, 102455), (28520, 98489), (30406, 92380), (34270, 81964), (36952, 76015), (40982, 68540), (46190, 60812)]