81047980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{7603}}^1$

素因数の和:7666

約数の個数: 48

約数和(自身を含む): 187788384

約数和(自身を除く): 106740404

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, 7603, 10660, 15206, 30412, 38015, 76030, 98839, 152060, 197678, 311723, 395356, 494195, 623446, 988390, 1246892, 1558615, 1976780, 3117230, 4052399, 6234460, 8104798, 16209596, 20261995, 40523990, 81047980]

約数ペア:

[(1, 81047980), (2, 40523990), (4, 20261995), (5, 16209596), (10, 8104798), (13, 6234460), (20, 4052399), (26, 3117230), (41, 1976780), (52, 1558615), (65, 1246892), (82, 988390), (130, 623446), (164, 494195), (205, 395356), (260, 311723), (410, 197678), (533, 152060), (820, 98839), (1066, 76030), (2132, 38015), (2665, 30412), (5330, 15206), (7603, 10660)]