21193720920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{71707}}^1$

素因数の和:72545

約数の個数: 96

約数和(自身を含む): 68964451920

約数和(自身を除く): 47770731000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 821, 1642, 2463, 3284, 4105, 4926, 6568, 7389, 8210, 9852, 12315, 14778, 16420, 19704, 24630, 29556, 32840, 36945, 49260, 59112, 71707, 73890, 98520, 143414, 147780, 215121, 286828, 295560, 358535, 430242, 573656, 645363, 717070, 860484, 1075605, 1290726, 1434140, 1720968, 2151210, 2581452, 2868280, 3226815, 4302420, 5162904, 6453630, 8604840, 12907260, 25814520, 58871447, 117742894, 176614341, 235485788, 294357235, 353228682, 470971576, 529843023, 588714470, 706457364, 883071705, 1059686046, 1177428940, 1412914728, 1766143410, 2119372092, 2354857880, 2649215115, 3532286820, 4238744184, 5298430230, 7064573640, 10596860460, 21193720920]

約数ペア:

[(1, 21193720920), (2, 10596860460), (3, 7064573640), (4, 5298430230), (5, 4238744184), (6, 3532286820), (8, 2649215115), (9, 2354857880), (10, 2119372092), (12, 1766143410), (15, 1412914728), (18, 1177428940), (20, 1059686046), (24, 883071705), (30, 706457364), (36, 588714470), (40, 529843023), (45, 470971576), (60, 353228682), (72, 294357235), (90, 235485788), (120, 176614341), (180, 117742894), (360, 58871447), (821, 25814520), (1642, 12907260), (2463, 8604840), (3284, 6453630), (4105, 5162904), (4926, 4302420), (6568, 3226815), (7389, 2868280), (8210, 2581452), (9852, 2151210), (12315, 1720968), (14778, 1434140), (16420, 1290726), (19704, 1075605), (24630, 860484), (29556, 717070), (32840, 645363), (36945, 573656), (49260, 430242), (59112, 358535), (71707, 295560), (73890, 286828), (98520, 215121), (143414, 147780)]