21014820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{373}}^1$

素因数の和:701

約数の個数: 72

約数和(自身を含む): 64120056

約数和(自身を除く): 43105236

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 313, 373, 626, 746, 939, 1119, 1252, 1492, 1565, 1865, 1878, 2238, 2817, 3130, 3357, 3730, 3756, 4476, 4695, 5595, 5634, 6260, 6714, 7460, 9390, 11190, 11268, 13428, 14085, 16785, 18780, 22380, 28170, 33570, 56340, 67140, 116749, 233498, 350247, 466996, 583745, 700494, 1050741, 1167490, 1400988, 1751235, 2101482, 2334980, 3502470, 4202964, 5253705, 7004940, 10507410, 21014820]

約数ペア:

[(1, 21014820), (2, 10507410), (3, 7004940), (4, 5253705), (5, 4202964), (6, 3502470), (9, 2334980), (10, 2101482), (12, 1751235), (15, 1400988), (18, 1167490), (20, 1050741), (30, 700494), (36, 583745), (45, 466996), (60, 350247), (90, 233498), (180, 116749), (313, 67140), (373, 56340), (626, 33570), (746, 28170), (939, 22380), (1119, 18780), (1252, 16785), (1492, 14085), (1565, 13428), (1865, 11268), (1878, 11190), (2238, 9390), (2817, 7460), (3130, 6714), (3357, 6260), (3730, 5634), (3756, 5595), (4476, 4695)]