81832720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:524

約数の個数: 80

約数和(自身を含む): 198581040

約数和(自身を除く): 116748320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 61, 80, 82, 122, 164, 205, 244, 305, 328, 409, 410, 488, 610, 656, 818, 820, 976, 1220, 1636, 1640, 2045, 2440, 2501, 3272, 3280, 4090, 4880, 5002, 6544, 8180, 10004, 12505, 16360, 16769, 20008, 24949, 25010, 32720, 33538, 40016, 49898, 50020, 67076, 83845, 99796, 100040, 124745, 134152, 167690, 199592, 200080, 249490, 268304, 335380, 399184, 498980, 670760, 997960, 1022909, 1341520, 1995920, 2045818, 4091636, 5114545, 8183272, 10229090, 16366544, 20458180, 40916360, 81832720]

約数ペア:

[(1, 81832720), (2, 40916360), (4, 20458180), (5, 16366544), (8, 10229090), (10, 8183272), (16, 5114545), (20, 4091636), (40, 2045818), (41, 1995920), (61, 1341520), (80, 1022909), (82, 997960), (122, 670760), (164, 498980), (205, 399184), (244, 335380), (305, 268304), (328, 249490), (409, 200080), (410, 199592), (488, 167690), (610, 134152), (656, 124745), (818, 100040), (820, 99796), (976, 83845), (1220, 67076), (1636, 50020), (1640, 49898), (2045, 40016), (2440, 33538), (2501, 32720), (3272, 25010), (3280, 24949), (4090, 20008), (4880, 16769), (5002, 16360), (6544, 12505), (8180, 10004)]