201999980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{110989}}^1$

素因数の和:111018

約数の個数: 48

約数和(自身を含む): 522096960

約数和(自身を除く): 320096980

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 110989, 221978, 443956, 554945, 776923, 1109890, 1442857, 1553846, 2219780, 2885714, 3107692, 3884615, 5771428, 7214285, 7769230, 10099999, 14428570, 15538460, 20199998, 28857140, 40399996, 50499995, 100999990, 201999980]

約数ペア:

[(1, 201999980), (2, 100999990), (4, 50499995), (5, 40399996), (7, 28857140), (10, 20199998), (13, 15538460), (14, 14428570), (20, 10099999), (26, 7769230), (28, 7214285), (35, 5771428), (52, 3884615), (65, 3107692), (70, 2885714), (91, 2219780), (130, 1553846), (140, 1442857), (182, 1109890), (260, 776923), (364, 554945), (455, 443956), (910, 221978), (1820, 110989)]