81452080

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16691}}^1$

素因数の和:16765

約数の個数: 40

約数和(自身を含む): 192492144

約数和(自身を除く): 111040064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 16691, 33382, 66764, 83455, 133528, 166910, 267056, 333820, 667640, 1018151, 1335280, 2036302, 4072604, 5090755, 8145208, 10181510, 16290416, 20363020, 40726040, 81452080]

約数ペア:

[(1, 81452080), (2, 40726040), (4, 20363020), (5, 16290416), (8, 10181510), (10, 8145208), (16, 5090755), (20, 4072604), (40, 2036302), (61, 1335280), (80, 1018151), (122, 667640), (244, 333820), (305, 267056), (488, 166910), (610, 133528), (976, 83455), (1220, 66764), (2440, 33382), (4880, 16691)]