21803460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51913}}^1$

素因数の和:51932

約数の個数: 48

約数和(自身を含む): 69772416

約数和(自身を除く): 47968956

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, 420, 51913, 103826, 155739, 207652, 259565, 311478, 363391, 519130, 622956, 726782, 778695, 1038260, 1090173, 1453564, 1557390, 1816955, 2180346, 3114780, 3633910, 4360692, 5450865, 7267820, 10901730, 21803460]

約数ペア:

[(1, 21803460), (2, 10901730), (3, 7267820), (4, 5450865), (5, 4360692), (6, 3633910), (7, 3114780), (10, 2180346), (12, 1816955), (14, 1557390), (15, 1453564), (20, 1090173), (21, 1038260), (28, 778695), (30, 726782), (35, 622956), (42, 519130), (60, 363391), (70, 311478), (84, 259565), (105, 207652), (140, 155739), (210, 103826), (420, 51913)]