21378210

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{14543}}^1$

素因数の和:14567

約数の個数: 48

約数和(自身を含む): 59688576

約数和(自身を除く): 38310366

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 14543, 29086, 43629, 72715, 87258, 101801, 145430, 203602, 218145, 305403, 436290, 509005, 610806, 712607, 1018010, 1425214, 1527015, 2137821, 3054030, 3563035, 4275642, 7126070, 10689105, 21378210]

約数ペア:

[(1, 21378210), (2, 10689105), (3, 7126070), (5, 4275642), (6, 3563035), (7, 3054030), (10, 2137821), (14, 1527015), (15, 1425214), (21, 1018010), (30, 712607), (35, 610806), (42, 509005), (49, 436290), (70, 305403), (98, 218145), (105, 203602), (147, 145430), (210, 101801), (245, 87258), (294, 72715), (490, 43629), (735, 29086), (1470, 14543)]