21306080

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:172

約数の個数: 96

約数和(自身を含む): 53434080

約数和(自身を除く): 32128000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 59, 61, 74, 80, 118, 122, 148, 160, 185, 236, 244, 295, 296, 305, 370, 472, 488, 590, 592, 610, 740, 944, 976, 1180, 1184, 1220, 1480, 1888, 1952, 2183, 2257, 2360, 2440, 2960, 3599, 4366, 4514, 4720, 4880, 5920, 7198, 8732, 9028, 9440, 9760, 10915, 11285, 14396, 17464, 17995, 18056, 21830, 22570, 28792, 34928, 35990, 36112, 43660, 45140, 57584, 69856, 71980, 72224, 87320, 90280, 115168, 133163, 143960, 174640, 180560, 266326, 287920, 349280, 361120, 532652, 575840, 665815, 1065304, 1331630, 2130608, 2663260, 4261216, 5326520, 10653040, 21306080]

約数ペア:

[(1, 21306080), (2, 10653040), (4, 5326520), (5, 4261216), (8, 2663260), (10, 2130608), (16, 1331630), (20, 1065304), (32, 665815), (37, 575840), (40, 532652), (59, 361120), (61, 349280), (74, 287920), (80, 266326), (118, 180560), (122, 174640), (148, 143960), (160, 133163), (185, 115168), (236, 90280), (244, 87320), (295, 72224), (296, 71980), (305, 69856), (370, 57584), (472, 45140), (488, 43660), (590, 36112), (592, 35990), (610, 34928), (740, 28792), (944, 22570), (976, 21830), (1180, 18056), (1184, 17995), (1220, 17464), (1480, 14396), (1888, 11285), (1952, 10915), (2183, 9760), (2257, 9440), (2360, 9028), (2440, 8732), (2960, 7198), (3599, 5920), (4366, 4880), (4514, 4720)]