19571895

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 20748105

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 139, 149, 189, 315, 417, 447, 695, 745, 945, 973, 1043, 1251, 1341, 2085, 2235, 2919, 3129, 3753, 4023, 4865, 5215, 6255, 6705, 8757, 9387, 14595, 15645, 18765, 20115, 20711, 26271, 28161, 43785, 46935, 62133, 103555, 131355, 140805, 144977, 186399, 310665, 434931, 559197, 724885, 931995, 1304793, 2174655, 2795985, 3914379, 6523965, 19571895]

約数ペア:

[(1, 19571895), (3, 6523965), (5, 3914379), (7, 2795985), (9, 2174655), (15, 1304793), (21, 931995), (27, 724885), (35, 559197), (45, 434931), (63, 310665), (105, 186399), (135, 144977), (139, 140805), (149, 131355), (189, 103555), (315, 62133), (417, 46935), (447, 43785), (695, 28161), (745, 26271), (945, 20711), (973, 20115), (1043, 18765), (1251, 15645), (1341, 14595), (2085, 9387), (2235, 8757), (2919, 6705), (3129, 6255), (3753, 5215), (4023, 4865)]