21830820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:162

約数の個数: 144

約数和(自身を含む): 70070784

約数和(自身を除く): 48239964

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 31, 33, 44, 55, 60, 62, 66, 93, 97, 110, 121, 124, 132, 155, 165, 186, 194, 220, 242, 291, 310, 330, 341, 363, 372, 388, 465, 484, 485, 582, 605, 620, 660, 682, 726, 930, 970, 1023, 1067, 1164, 1210, 1364, 1452, 1455, 1705, 1815, 1860, 1940, 2046, 2134, 2420, 2910, 3007, 3201, 3410, 3630, 3751, 4092, 4268, 5115, 5335, 5820, 6014, 6402, 6820, 7260, 7502, 9021, 10230, 10670, 11253, 11737, 12028, 12804, 15004, 15035, 16005, 18042, 18755, 20460, 21340, 22506, 23474, 30070, 32010, 33077, 35211, 36084, 37510, 45012, 45105, 46948, 56265, 58685, 60140, 64020, 66154, 70422, 75020, 90210, 99231, 112530, 117370, 132308, 140844, 165385, 176055, 180420, 198462, 225060, 234740, 330770, 352110, 363847, 396924, 496155, 661540, 704220, 727694, 992310, 1091541, 1455388, 1819235, 1984620, 2183082, 3638470, 4366164, 5457705, 7276940, 10915410, 21830820]

約数ペア:

[(1, 21830820), (2, 10915410), (3, 7276940), (4, 5457705), (5, 4366164), (6, 3638470), (10, 2183082), (11, 1984620), (12, 1819235), (15, 1455388), (20, 1091541), (22, 992310), (30, 727694), (31, 704220), (33, 661540), (44, 496155), (55, 396924), (60, 363847), (62, 352110), (66, 330770), (93, 234740), (97, 225060), (110, 198462), (121, 180420), (124, 176055), (132, 165385), (155, 140844), (165, 132308), (186, 117370), (194, 112530), (220, 99231), (242, 90210), (291, 75020), (310, 70422), (330, 66154), (341, 64020), (363, 60140), (372, 58685), (388, 56265), (465, 46948), (484, 45105), (485, 45012), (582, 37510), (605, 36084), (620, 35211), (660, 33077), (682, 32010), (726, 30070), (930, 23474), (970, 22506), (1023, 21340), (1067, 20460), (1164, 18755), (1210, 18042), (1364, 16005), (1452, 15035), (1455, 15004), (1705, 12804), (1815, 12028), (1860, 11737), (1940, 11253), (2046, 10670), (2134, 10230), (2420, 9021), (2910, 7502), (3007, 7260), (3201, 6820), (3410, 6402), (3630, 6014), (3751, 5820), (4092, 5335), (4268, 5115)]