19650000

素因数分解:

$2^4\times 3^1\times 5^5\times {\mathrm{131}}^1$

素因数の和:167

約数の個数: 120

約数和(自身を含む): 63933408

約数和(自身を除く): 44283408

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 125, 131, 150, 200, 240, 250, 262, 300, 375, 393, 400, 500, 524, 600, 625, 655, 750, 786, 1000, 1048, 1200, 1250, 1310, 1500, 1572, 1875, 1965, 2000, 2096, 2500, 2620, 3000, 3125, 3144, 3275, 3750, 3930, 5000, 5240, 6000, 6250, 6288, 6550, 7500, 7860, 9375, 9825, 10000, 10480, 12500, 13100, 15000, 15720, 16375, 18750, 19650, 25000, 26200, 30000, 31440, 32750, 37500, 39300, 49125, 50000, 52400, 65500, 75000, 78600, 81875, 98250, 131000, 150000, 157200, 163750, 196500, 245625, 262000, 327500, 393000, 409375, 491250, 655000, 786000, 818750, 982500, 1228125, 1310000, 1637500, 1965000, 2456250, 3275000, 3930000, 4912500, 6550000, 9825000, 19650000]

約数ペア:

[(1, 19650000), (2, 9825000), (3, 6550000), (4, 4912500), (5, 3930000), (6, 3275000), (8, 2456250), (10, 1965000), (12, 1637500), (15, 1310000), (16, 1228125), (20, 982500), (24, 818750), (25, 786000), (30, 655000), (40, 491250), (48, 409375), (50, 393000), (60, 327500), (75, 262000), (80, 245625), (100, 196500), (120, 163750), (125, 157200), (131, 150000), (150, 131000), (200, 98250), (240, 81875), (250, 78600), (262, 75000), (300, 65500), (375, 52400), (393, 50000), (400, 49125), (500, 39300), (524, 37500), (600, 32750), (625, 31440), (655, 30000), (750, 26200), (786, 25000), (1000, 19650), (1048, 18750), (1200, 16375), (1250, 15720), (1310, 15000), (1500, 13100), (1572, 12500), (1875, 10480), (1965, 10000), (2000, 9825), (2096, 9375), (2500, 7860), (2620, 7500), (3000, 6550), (3125, 6288), (3144, 6250), (3275, 6000), (3750, 5240), (3930, 5000)]