138897980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{907}}^1$

素因数の和:979

約数の個数: 96

約数和(自身を含む): 341698560

約数和(自身を除く): 202800580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 31, 38, 52, 62, 65, 76, 95, 124, 130, 155, 190, 247, 260, 310, 380, 403, 494, 589, 620, 806, 907, 988, 1178, 1235, 1612, 1814, 2015, 2356, 2470, 2945, 3628, 4030, 4535, 4940, 5890, 7657, 8060, 9070, 11780, 11791, 15314, 17233, 18140, 23582, 28117, 30628, 34466, 38285, 47164, 56234, 58955, 68932, 76570, 86165, 112468, 117910, 140585, 153140, 172330, 224029, 235820, 281170, 344660, 365521, 448058, 534223, 562340, 731042, 896116, 1068446, 1120145, 1462084, 1827605, 2136892, 2240290, 2671115, 3655210, 4480580, 5342230, 6944899, 7310420, 10684460, 13889798, 27779596, 34724495, 69448990, 138897980]

約数ペア:

[(1, 138897980), (2, 69448990), (4, 34724495), (5, 27779596), (10, 13889798), (13, 10684460), (19, 7310420), (20, 6944899), (26, 5342230), (31, 4480580), (38, 3655210), (52, 2671115), (62, 2240290), (65, 2136892), (76, 1827605), (95, 1462084), (124, 1120145), (130, 1068446), (155, 896116), (190, 731042), (247, 562340), (260, 534223), (310, 448058), (380, 365521), (403, 344660), (494, 281170), (589, 235820), (620, 224029), (806, 172330), (907, 153140), (988, 140585), (1178, 117910), (1235, 112468), (1612, 86165), (1814, 76570), (2015, 68932), (2356, 58955), (2470, 56234), (2945, 47164), (3628, 38285), (4030, 34466), (4535, 30628), (4940, 28117), (5890, 23582), (7657, 18140), (8060, 17233), (9070, 15314), (11780, 11791)]