81953560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{911}}^1$

素因数の和:1108

約数の個数: 64

約数和(自身を含む): 199946880

約数和(自身を除く): 117993320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 173, 260, 346, 520, 692, 865, 911, 1384, 1730, 1822, 2249, 3460, 3644, 4498, 4555, 6920, 7288, 8996, 9110, 11245, 11843, 17992, 18220, 22490, 23686, 36440, 44980, 47372, 59215, 89960, 94744, 118430, 157603, 236860, 315206, 473720, 630412, 788015, 1260824, 1576030, 2048839, 3152060, 4097678, 6304120, 8195356, 10244195, 16390712, 20488390, 40976780, 81953560]

約数ペア:

[(1, 81953560), (2, 40976780), (4, 20488390), (5, 16390712), (8, 10244195), (10, 8195356), (13, 6304120), (20, 4097678), (26, 3152060), (40, 2048839), (52, 1576030), (65, 1260824), (104, 788015), (130, 630412), (173, 473720), (260, 315206), (346, 236860), (520, 157603), (692, 118430), (865, 94744), (911, 89960), (1384, 59215), (1730, 47372), (1822, 44980), (2249, 36440), (3460, 23686), (3644, 22490), (4498, 18220), (4555, 17992), (6920, 11843), (7288, 11245), (8996, 9110)]