21000994539

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:357

約数の個数: 128

約数和(自身を含む): 34881767424

約数和(自身を除く): 13880772885

約数列:

[1, 3, 7, 21, 37, 41, 61, 101, 107, 111, 123, 183, 259, 287, 303, 321, 427, 707, 749, 777, 861, 1281, 1517, 2121, 2247, 2257, 2501, 3737, 3959, 4141, 4387, 4551, 6161, 6527, 6771, 7503, 10619, 10807, 11211, 11877, 12423, 13161, 15799, 17507, 18483, 19581, 26159, 27713, 28987, 30709, 31857, 32421, 43127, 45689, 47397, 52521, 75649, 78477, 83139, 86961, 92127, 92537, 129381, 137067, 153217, 162319, 226947, 227957, 241499, 252601, 267607, 277611, 399859, 443087, 459651, 486957, 647759, 659227, 683871, 724497, 757803, 802821, 1072519, 1136233, 1199577, 1329261, 1595699, 1690493, 1768207, 1873249, 1943277, 1977681, 2799013, 3101609, 3217557, 3408699, 4614589, 4787097, 5071479, 5304621, 5619747, 8397039, 9304827, 9346237, 9901459, 13843767, 16394219, 24391399, 27028307, 28038711, 29704377, 49182657, 65423659, 69310213, 73174197, 81084921, 114759533, 170739793, 189198149, 196270977, 207930639, 344278599, 512219379, 567594447, 1000047359, 3000142077, 7000331513, 21000994539]

約数ペア:

[(1, 21000994539), (3, 7000331513), (7, 3000142077), (21, 1000047359), (37, 567594447), (41, 512219379), (61, 344278599), (101, 207930639), (107, 196270977), (111, 189198149), (123, 170739793), (183, 114759533), (259, 81084921), (287, 73174197), (303, 69310213), (321, 65423659), (427, 49182657), (707, 29704377), (749, 28038711), (777, 27028307), (861, 24391399), (1281, 16394219), (1517, 13843767), (2121, 9901459), (2247, 9346237), (2257, 9304827), (2501, 8397039), (3737, 5619747), (3959, 5304621), (4141, 5071479), (4387, 4787097), (4551, 4614589), (6161, 3408699), (6527, 3217557), (6771, 3101609), (7503, 2799013), (10619, 1977681), (10807, 1943277), (11211, 1873249), (11877, 1768207), (12423, 1690493), (13161, 1595699), (15799, 1329261), (17507, 1199577), (18483, 1136233), (19581, 1072519), (26159, 802821), (27713, 757803), (28987, 724497), (30709, 683871), (31857, 659227), (32421, 647759), (43127, 486957), (45689, 459651), (47397, 443087), (52521, 399859), (75649, 277611), (78477, 267607), (83139, 252601), (86961, 241499), (92127, 227957), (92537, 226947), (129381, 162319), (137067, 153217)]