80131220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{7517}}^1$

素因数の和:7580

約数の個数: 48

約数和(自身を含む): 185664528

約数和(自身を除く): 105533308

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 2132, 2665, 5330, 7517, 10660, 15034, 30068, 37585, 75170, 97721, 150340, 195442, 308197, 390884, 488605, 616394, 977210, 1232788, 1540985, 1954420, 3081970, 4006561, 6163940, 8013122, 16026244, 20032805, 40065610, 80131220]

約数ペア:

[(1, 80131220), (2, 40065610), (4, 20032805), (5, 16026244), (10, 8013122), (13, 6163940), (20, 4006561), (26, 3081970), (41, 1954420), (52, 1540985), (65, 1232788), (82, 977210), (130, 616394), (164, 488605), (205, 390884), (260, 308197), (410, 195442), (533, 150340), (820, 97721), (1066, 75170), (2132, 37585), (2665, 30068), (5330, 15034), (7517, 10660)]