21063260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{641}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 46593792

約数和(自身を除く): 25530532

約数列:

[1, 2, 4, 5, 10, 20, 31, 53, 62, 106, 124, 155, 212, 265, 310, 530, 620, 641, 1060, 1282, 1643, 2564, 3205, 3286, 6410, 6572, 8215, 12820, 16430, 19871, 32860, 33973, 39742, 67946, 79484, 99355, 135892, 169865, 198710, 339730, 397420, 679460, 1053163, 2106326, 4212652, 5265815, 10531630, 21063260]

約数ペア:

[(1, 21063260), (2, 10531630), (4, 5265815), (5, 4212652), (10, 2106326), (20, 1053163), (31, 679460), (53, 397420), (62, 339730), (106, 198710), (124, 169865), (155, 135892), (212, 99355), (265, 79484), (310, 67946), (530, 39742), (620, 33973), (641, 32860), (1060, 19871), (1282, 16430), (1643, 12820), (2564, 8215), (3205, 6572), (3286, 6410)]