31218180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{311}}^1$

素因数の和:569

約数の個数: 96

約数和(自身を含む): 100638720

約数和(自身を除く): 69420540

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 239, 311, 420, 478, 622, 717, 933, 956, 1195, 1244, 1434, 1555, 1673, 1866, 2177, 2390, 2868, 3110, 3346, 3585, 3732, 4354, 4665, 4780, 5019, 6220, 6531, 6692, 7170, 8365, 8708, 9330, 10038, 10885, 13062, 14340, 16730, 18660, 20076, 21770, 25095, 26124, 32655, 33460, 43540, 50190, 65310, 74329, 100380, 130620, 148658, 222987, 297316, 371645, 445974, 520303, 743290, 891948, 1040606, 1114935, 1486580, 1560909, 2081212, 2229870, 2601515, 3121818, 4459740, 5203030, 6243636, 7804545, 10406060, 15609090, 31218180]

約数ペア:

[(1, 31218180), (2, 15609090), (3, 10406060), (4, 7804545), (5, 6243636), (6, 5203030), (7, 4459740), (10, 3121818), (12, 2601515), (14, 2229870), (15, 2081212), (20, 1560909), (21, 1486580), (28, 1114935), (30, 1040606), (35, 891948), (42, 743290), (60, 520303), (70, 445974), (84, 371645), (105, 297316), (140, 222987), (210, 148658), (239, 130620), (311, 100380), (420, 74329), (478, 65310), (622, 50190), (717, 43540), (933, 33460), (956, 32655), (1195, 26124), (1244, 25095), (1434, 21770), (1555, 20076), (1673, 18660), (1866, 16730), (2177, 14340), (2390, 13062), (2868, 10885), (3110, 10038), (3346, 9330), (3585, 8708), (3732, 8365), (4354, 7170), (4665, 6692), (4780, 6531), (5019, 6220)]