25720040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 59996160

約数和(自身を除く): 34276120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 83, 122, 127, 166, 244, 254, 305, 332, 415, 488, 508, 610, 635, 664, 830, 1016, 1220, 1270, 1660, 2440, 2540, 3320, 5063, 5080, 7747, 10126, 10541, 15494, 20252, 21082, 25315, 30988, 38735, 40504, 42164, 50630, 52705, 61976, 77470, 84328, 101260, 105410, 154940, 202520, 210820, 309880, 421640, 643001, 1286002, 2572004, 3215005, 5144008, 6430010, 12860020, 25720040]

約数ペア:

[(1, 25720040), (2, 12860020), (4, 6430010), (5, 5144008), (8, 3215005), (10, 2572004), (20, 1286002), (40, 643001), (61, 421640), (83, 309880), (122, 210820), (127, 202520), (166, 154940), (244, 105410), (254, 101260), (305, 84328), (332, 77470), (415, 61976), (488, 52705), (508, 50630), (610, 42164), (635, 40504), (664, 38735), (830, 30988), (1016, 25315), (1220, 21082), (1270, 20252), (1660, 15494), (2440, 10541), (2540, 10126), (3320, 7747), (5063, 5080)]