21458480

素因数分解:

$2^4\times 5^1\times {\mathrm{347}}^1\times {\mathrm{773}}^1$

素因数の和:1133

約数の個数: 40

約数和(自身を含む): 50099472

約数和(自身を除く): 28640992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 347, 694, 773, 1388, 1546, 1735, 2776, 3092, 3470, 3865, 5552, 6184, 6940, 7730, 12368, 13880, 15460, 27760, 30920, 61840, 268231, 536462, 1072924, 1341155, 2145848, 2682310, 4291696, 5364620, 10729240, 21458480]

約数ペア:

[(1, 21458480), (2, 10729240), (4, 5364620), (5, 4291696), (8, 2682310), (10, 2145848), (16, 1341155), (20, 1072924), (40, 536462), (80, 268231), (347, 61840), (694, 30920), (773, 27760), (1388, 15460), (1546, 13880), (1735, 12368), (2776, 7730), (3092, 6940), (3470, 6184), (3865, 5552)]