20753820

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1$

素因数の和:601

約数の個数: 120

約数和(自身を含む): 68058144

約数和(自身を除く): 47304324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 81, 90, 92, 108, 115, 135, 138, 162, 180, 207, 230, 270, 276, 324, 345, 405, 414, 460, 540, 557, 621, 690, 810, 828, 1035, 1114, 1242, 1380, 1620, 1671, 1863, 2070, 2228, 2484, 2785, 3105, 3342, 3726, 4140, 5013, 5570, 6210, 6684, 7452, 8355, 9315, 10026, 11140, 12420, 12811, 15039, 16710, 18630, 20052, 25065, 25622, 30078, 33420, 37260, 38433, 45117, 50130, 51244, 60156, 64055, 75195, 76866, 90234, 100260, 115299, 128110, 150390, 153732, 180468, 192165, 225585, 230598, 256220, 300780, 345897, 384330, 451170, 461196, 576495, 691794, 768660, 902340, 1037691, 1152990, 1383588, 1729485, 2075382, 2305980, 3458970, 4150764, 5188455, 6917940, 10376910, 20753820]

約数ペア:

[(1, 20753820), (2, 10376910), (3, 6917940), (4, 5188455), (5, 4150764), (6, 3458970), (9, 2305980), (10, 2075382), (12, 1729485), (15, 1383588), (18, 1152990), (20, 1037691), (23, 902340), (27, 768660), (30, 691794), (36, 576495), (45, 461196), (46, 451170), (54, 384330), (60, 345897), (69, 300780), (81, 256220), (90, 230598), (92, 225585), (108, 192165), (115, 180468), (135, 153732), (138, 150390), (162, 128110), (180, 115299), (207, 100260), (230, 90234), (270, 76866), (276, 75195), (324, 64055), (345, 60156), (405, 51244), (414, 50130), (460, 45117), (540, 38433), (557, 37260), (621, 33420), (690, 30078), (810, 25622), (828, 25065), (1035, 20052), (1114, 18630), (1242, 16710), (1380, 15039), (1620, 12811), (1671, 12420), (1863, 11140), (2070, 10026), (2228, 9315), (2484, 8355), (2785, 7452), (3105, 6684), (3342, 6210), (3726, 5570), (4140, 5013)]