19796140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 52214400

約数和(自身を除く): 32418260

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 73, 91, 130, 140, 146, 149, 182, 260, 292, 298, 364, 365, 455, 511, 596, 730, 745, 910, 949, 1022, 1043, 1460, 1490, 1820, 1898, 1937, 2044, 2086, 2555, 2980, 3796, 3874, 4172, 4745, 5110, 5215, 6643, 7748, 9490, 9685, 10220, 10430, 10877, 13286, 13559, 18980, 19370, 20860, 21754, 26572, 27118, 33215, 38740, 43508, 54236, 54385, 66430, 67795, 76139, 108770, 132860, 135590, 141401, 152278, 217540, 271180, 282802, 304556, 380695, 565604, 707005, 761390, 989807, 1414010, 1522780, 1979614, 2828020, 3959228, 4949035, 9898070, 19796140]

約数ペア:

[(1, 19796140), (2, 9898070), (4, 4949035), (5, 3959228), (7, 2828020), (10, 1979614), (13, 1522780), (14, 1414010), (20, 989807), (26, 761390), (28, 707005), (35, 565604), (52, 380695), (65, 304556), (70, 282802), (73, 271180), (91, 217540), (130, 152278), (140, 141401), (146, 135590), (149, 132860), (182, 108770), (260, 76139), (292, 67795), (298, 66430), (364, 54385), (365, 54236), (455, 43508), (511, 38740), (596, 33215), (730, 27118), (745, 26572), (910, 21754), (949, 20860), (1022, 19370), (1043, 18980), (1460, 13559), (1490, 13286), (1820, 10877), (1898, 10430), (1937, 10220), (2044, 9685), (2086, 9490), (2555, 7748), (2980, 6643), (3796, 5215), (3874, 5110), (4172, 4745)]