201209720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{82463}}^1$

素因数の和:82535

約数の個数: 32

約数和(自身を含む): 460149120

約数和(自身を除く): 258939400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 82463, 164926, 329852, 412315, 659704, 824630, 1649260, 3298520, 5030243, 10060486, 20120972, 25151215, 40241944, 50302430, 100604860, 201209720]

約数ペア:

[(1, 201209720), (2, 100604860), (4, 50302430), (5, 40241944), (8, 25151215), (10, 20120972), (20, 10060486), (40, 5030243), (61, 3298520), (122, 1649260), (244, 824630), (305, 659704), (488, 412315), (610, 329852), (1220, 164926), (2440, 82463)]