21507570

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4877}}^1$

素因数の和:4904

約数の個数: 72

約数和(自身を含む): 65062764

約数和(自身を除く): 43555194

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4877, 9754, 14631, 24385, 29262, 34139, 43893, 48770, 68278, 73155, 87786, 102417, 146310, 170695, 204834, 219465, 238973, 307251, 341390, 438930, 477946, 512085, 614502, 716919, 1024170, 1194865, 1433838, 1536255, 2150757, 2389730, 3072510, 3584595, 4301514, 7169190, 10753785, 21507570]

約数ペア:

[(1, 21507570), (2, 10753785), (3, 7169190), (5, 4301514), (6, 3584595), (7, 3072510), (9, 2389730), (10, 2150757), (14, 1536255), (15, 1433838), (18, 1194865), (21, 1024170), (30, 716919), (35, 614502), (42, 512085), (45, 477946), (49, 438930), (63, 341390), (70, 307251), (90, 238973), (98, 219465), (105, 204834), (126, 170695), (147, 146310), (210, 102417), (245, 87786), (294, 73155), (315, 68278), (441, 48770), (490, 43893), (630, 34139), (735, 29262), (882, 24385), (1470, 14631), (2205, 9754), (4410, 4877)]