721946240

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:338

約数の個数: 128

約数和(自身を含む): 1777248000

約数和(自身を除く): 1055301760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 109, 128, 131, 158, 160, 218, 262, 316, 320, 395, 436, 524, 545, 632, 640, 655, 790, 872, 1048, 1090, 1264, 1310, 1580, 1744, 2096, 2180, 2528, 2620, 3160, 3488, 4192, 4360, 5056, 5240, 6320, 6976, 8384, 8611, 8720, 10112, 10349, 10480, 12640, 13952, 14279, 16768, 17222, 17440, 20698, 20960, 25280, 28558, 34444, 34880, 41396, 41920, 43055, 50560, 51745, 57116, 68888, 69760, 71395, 82792, 83840, 86110, 103490, 114232, 137776, 142790, 165584, 172220, 206980, 228464, 275552, 285580, 331168, 344440, 413960, 456928, 551104, 571160, 662336, 688880, 827920, 913856, 1102208, 1128041, 1142320, 1324672, 1377760, 1655840, 1827712, 2256082, 2284640, 2755520, 3311680, 4512164, 4569280, 5511040, 5640205, 6623360, 9024328, 9138560, 11280410, 18048656, 22560820, 36097312, 45121640, 72194624, 90243280, 144389248, 180486560, 360973120, 721946240]

約数ペア:

[(1, 721946240), (2, 360973120), (4, 180486560), (5, 144389248), (8, 90243280), (10, 72194624), (16, 45121640), (20, 36097312), (32, 22560820), (40, 18048656), (64, 11280410), (79, 9138560), (80, 9024328), (109, 6623360), (128, 5640205), (131, 5511040), (158, 4569280), (160, 4512164), (218, 3311680), (262, 2755520), (316, 2284640), (320, 2256082), (395, 1827712), (436, 1655840), (524, 1377760), (545, 1324672), (632, 1142320), (640, 1128041), (655, 1102208), (790, 913856), (872, 827920), (1048, 688880), (1090, 662336), (1264, 571160), (1310, 551104), (1580, 456928), (1744, 413960), (2096, 344440), (2180, 331168), (2528, 285580), (2620, 275552), (3160, 228464), (3488, 206980), (4192, 172220), (4360, 165584), (5056, 142790), (5240, 137776), (6320, 114232), (6976, 103490), (8384, 86110), (8611, 83840), (8720, 82792), (10112, 71395), (10349, 69760), (10480, 68888), (12640, 57116), (13952, 51745), (14279, 50560), (16768, 43055), (17222, 41920), (17440, 41396), (20698, 34880), (20960, 34444), (25280, 28558)]