161327920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2543}}^1$

素因数の和:2630

約数の個数: 80

約数和(自身を含む): 410723712

約数和(自身を除く): 249395792

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 488, 520, 610, 793, 976, 1040, 1220, 1586, 2440, 2543, 3172, 3965, 4880, 5086, 6344, 7930, 10172, 12688, 12715, 15860, 20344, 25430, 31720, 33059, 40688, 50860, 63440, 66118, 101720, 132236, 155123, 165295, 203440, 264472, 310246, 330590, 528944, 620492, 661180, 775615, 1240984, 1322360, 1551230, 2016599, 2481968, 2644720, 3102460, 4033198, 6204920, 8066396, 10082995, 12409840, 16132792, 20165990, 32265584, 40331980, 80663960, 161327920]

約数ペア:

[(1, 161327920), (2, 80663960), (4, 40331980), (5, 32265584), (8, 20165990), (10, 16132792), (13, 12409840), (16, 10082995), (20, 8066396), (26, 6204920), (40, 4033198), (52, 3102460), (61, 2644720), (65, 2481968), (80, 2016599), (104, 1551230), (122, 1322360), (130, 1240984), (208, 775615), (244, 661180), (260, 620492), (305, 528944), (488, 330590), (520, 310246), (610, 264472), (793, 203440), (976, 165295), (1040, 155123), (1220, 132236), (1586, 101720), (2440, 66118), (2543, 63440), (3172, 50860), (3965, 40688), (4880, 33059), (5086, 31720), (6344, 25430), (7930, 20344), (10172, 15860), (12688, 12715)]