221704785

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 391968720

約数和(自身を除く): 170263935

約数列:

[1, 3, 5, 9, 15, 45, 89, 197, 267, 281, 445, 591, 801, 843, 985, 1335, 1405, 1773, 2529, 2955, 4005, 4215, 8865, 12645, 17533, 25009, 52599, 55357, 75027, 87665, 125045, 157797, 166071, 225081, 262995, 276785, 375135, 498213, 788985, 830355, 1125405, 2491065, 4926773, 14780319, 24633865, 44340957, 73901595, 221704785]

約数ペア:

[(1, 221704785), (3, 73901595), (5, 44340957), (9, 24633865), (15, 14780319), (45, 4926773), (89, 2491065), (197, 1125405), (267, 830355), (281, 788985), (445, 498213), (591, 375135), (801, 276785), (843, 262995), (985, 225081), (1335, 166071), (1405, 157797), (1773, 125045), (2529, 87665), (2955, 75027), (4005, 55357), (4215, 52599), (8865, 25009), (12645, 17533)]