2789234920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:827

約数の個数: 128

約数和(自身を含む): 6726343680

約数和(自身を除く): 3937108760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 83, 124, 155, 164, 166, 205, 248, 310, 328, 332, 410, 415, 620, 661, 664, 820, 830, 1240, 1271, 1322, 1640, 1660, 2542, 2573, 2644, 3305, 3320, 3403, 5084, 5146, 5288, 6355, 6610, 6806, 10168, 10292, 12710, 12865, 13220, 13612, 17015, 20491, 20584, 25420, 25730, 26440, 27101, 27224, 34030, 40982, 50840, 51460, 54202, 54863, 68060, 81964, 102455, 102920, 105493, 108404, 109726, 135505, 136120, 163928, 204910, 210986, 216808, 219452, 271010, 274315, 409820, 421972, 438904, 527465, 542020, 548630, 819640, 840131, 843944, 1054930, 1084040, 1097260, 1680262, 1700753, 2109860, 2194520, 2249383, 3360524, 3401506, 4200655, 4219720, 4498766, 6721048, 6803012, 8401310, 8503765, 8997532, 11246915, 13606024, 16802620, 17007530, 17995064, 22493830, 33605240, 34015060, 44987660, 68030120, 69730873, 89975320, 139461746, 278923492, 348654365, 557846984, 697308730, 1394617460, 2789234920]

約数ペア:

[(1, 2789234920), (2, 1394617460), (4, 697308730), (5, 557846984), (8, 348654365), (10, 278923492), (20, 139461746), (31, 89975320), (40, 69730873), (41, 68030120), (62, 44987660), (82, 34015060), (83, 33605240), (124, 22493830), (155, 17995064), (164, 17007530), (166, 16802620), (205, 13606024), (248, 11246915), (310, 8997532), (328, 8503765), (332, 8401310), (410, 6803012), (415, 6721048), (620, 4498766), (661, 4219720), (664, 4200655), (820, 3401506), (830, 3360524), (1240, 2249383), (1271, 2194520), (1322, 2109860), (1640, 1700753), (1660, 1680262), (2542, 1097260), (2573, 1084040), (2644, 1054930), (3305, 843944), (3320, 840131), (3403, 819640), (5084, 548630), (5146, 542020), (5288, 527465), (6355, 438904), (6610, 421972), (6806, 409820), (10168, 274315), (10292, 271010), (12710, 219452), (12865, 216808), (13220, 210986), (13612, 204910), (17015, 163928), (20491, 136120), (20584, 135505), (25420, 109726), (25730, 108404), (26440, 105493), (27101, 102920), (27224, 102455), (34030, 81964), (40982, 68060), (50840, 54863), (51460, 54202)]