646399920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{659}}^1$

素因数の和:803

約数の個数: 160

約数和(自身を含む): 2070224640

約数和(自身を除く): 1423824720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 67, 80, 120, 122, 134, 183, 201, 240, 244, 268, 305, 335, 366, 402, 488, 536, 610, 659, 670, 732, 804, 915, 976, 1005, 1072, 1220, 1318, 1340, 1464, 1608, 1830, 1977, 2010, 2440, 2636, 2680, 2928, 3216, 3295, 3660, 3954, 4020, 4087, 4880, 5272, 5360, 6590, 7320, 7908, 8040, 8174, 9885, 10544, 12261, 13180, 14640, 15816, 16080, 16348, 19770, 20435, 24522, 26360, 31632, 32696, 39540, 40199, 40870, 44153, 49044, 52720, 61305, 65392, 79080, 80398, 81740, 88306, 98088, 120597, 122610, 132459, 158160, 160796, 163480, 176612, 196176, 200995, 220765, 241194, 245220, 264918, 321592, 326960, 353224, 401990, 441530, 482388, 490440, 529836, 602985, 643184, 662295, 706448, 803980, 883060, 964776, 980880, 1059672, 1205970, 1324590, 1607960, 1766120, 1929552, 2119344, 2411940, 2649180, 2693333, 3215920, 3532240, 4823880, 5298360, 5386666, 8079999, 9647760, 10596720, 10773332, 13466665, 16159998, 21546664, 26933330, 32319996, 40399995, 43093328, 53866660, 64639992, 80799990, 107733320, 129279984, 161599980, 215466640, 323199960, 646399920]

約数ペア:

[(1, 646399920), (2, 323199960), (3, 215466640), (4, 161599980), (5, 129279984), (6, 107733320), (8, 80799990), (10, 64639992), (12, 53866660), (15, 43093328), (16, 40399995), (20, 32319996), (24, 26933330), (30, 21546664), (40, 16159998), (48, 13466665), (60, 10773332), (61, 10596720), (67, 9647760), (80, 8079999), (120, 5386666), (122, 5298360), (134, 4823880), (183, 3532240), (201, 3215920), (240, 2693333), (244, 2649180), (268, 2411940), (305, 2119344), (335, 1929552), (366, 1766120), (402, 1607960), (488, 1324590), (536, 1205970), (610, 1059672), (659, 980880), (670, 964776), (732, 883060), (804, 803980), (915, 706448), (976, 662295), (1005, 643184), (1072, 602985), (1220, 529836), (1318, 490440), (1340, 482388), (1464, 441530), (1608, 401990), (1830, 353224), (1977, 326960), (2010, 321592), (2440, 264918), (2636, 245220), (2680, 241194), (2928, 220765), (3216, 200995), (3295, 196176), (3660, 176612), (3954, 163480), (4020, 160796), (4087, 158160), (4880, 132459), (5272, 122610), (5360, 120597), (6590, 98088), (7320, 88306), (7908, 81740), (8040, 80398), (8174, 79080), (9885, 65392), (10544, 61305), (12261, 52720), (13180, 49044), (14640, 44153), (15816, 40870), (16080, 40199), (16348, 39540), (19770, 32696), (20435, 31632), (24522, 26360)]