20812320

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:267

約数の個数: 144

約数和(自身を含む): 72235800

約数和(自身を除く): 51423480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 97, 120, 144, 149, 160, 180, 194, 240, 288, 291, 298, 360, 388, 447, 480, 485, 582, 596, 720, 745, 776, 873, 894, 970, 1164, 1192, 1341, 1440, 1455, 1490, 1552, 1746, 1788, 1940, 2235, 2328, 2384, 2682, 2910, 2980, 3104, 3492, 3576, 3880, 4365, 4470, 4656, 4768, 5364, 5820, 5960, 6705, 6984, 7152, 7760, 8730, 8940, 9312, 10728, 11640, 11920, 13410, 13968, 14304, 14453, 15520, 17460, 17880, 21456, 23280, 23840, 26820, 27936, 28906, 34920, 35760, 42912, 43359, 46560, 53640, 57812, 69840, 71520, 72265, 86718, 107280, 115624, 130077, 139680, 144530, 173436, 214560, 216795, 231248, 260154, 289060, 346872, 433590, 462496, 520308, 578120, 650385, 693744, 867180, 1040616, 1156240, 1300770, 1387488, 1734360, 2081232, 2312480, 2601540, 3468720, 4162464, 5203080, 6937440, 10406160, 20812320]

約数ペア:

[(1, 20812320), (2, 10406160), (3, 6937440), (4, 5203080), (5, 4162464), (6, 3468720), (8, 2601540), (9, 2312480), (10, 2081232), (12, 1734360), (15, 1387488), (16, 1300770), (18, 1156240), (20, 1040616), (24, 867180), (30, 693744), (32, 650385), (36, 578120), (40, 520308), (45, 462496), (48, 433590), (60, 346872), (72, 289060), (80, 260154), (90, 231248), (96, 216795), (97, 214560), (120, 173436), (144, 144530), (149, 139680), (160, 130077), (180, 115624), (194, 107280), (240, 86718), (288, 72265), (291, 71520), (298, 69840), (360, 57812), (388, 53640), (447, 46560), (480, 43359), (485, 42912), (582, 35760), (596, 34920), (720, 28906), (745, 27936), (776, 26820), (873, 23840), (894, 23280), (970, 21456), (1164, 17880), (1192, 17460), (1341, 15520), (1440, 14453), (1455, 14304), (1490, 13968), (1552, 13410), (1746, 11920), (1788, 11640), (1940, 10728), (2235, 9312), (2328, 8940), (2384, 8730), (2682, 7760), (2910, 7152), (2980, 6984), (3104, 6705), (3492, 5960), (3576, 5820), (3880, 5364), (4365, 4768), (4470, 4656)]