21690780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:443

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 43627620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 53, 57, 60, 76, 95, 106, 114, 159, 190, 212, 228, 265, 285, 318, 359, 380, 530, 570, 636, 718, 795, 1007, 1060, 1077, 1140, 1436, 1590, 1795, 2014, 2154, 3021, 3180, 3590, 4028, 4308, 5035, 5385, 6042, 6821, 7180, 10070, 10770, 12084, 13642, 15105, 19027, 20140, 20463, 21540, 27284, 30210, 34105, 38054, 40926, 57081, 60420, 68210, 76108, 81852, 95135, 102315, 114162, 136420, 190270, 204630, 228324, 285405, 361513, 380540, 409260, 570810, 723026, 1084539, 1141620, 1446052, 1807565, 2169078, 3615130, 4338156, 5422695, 7230260, 10845390, 21690780]

約数ペア:

[(1, 21690780), (2, 10845390), (3, 7230260), (4, 5422695), (5, 4338156), (6, 3615130), (10, 2169078), (12, 1807565), (15, 1446052), (19, 1141620), (20, 1084539), (30, 723026), (38, 570810), (53, 409260), (57, 380540), (60, 361513), (76, 285405), (95, 228324), (106, 204630), (114, 190270), (159, 136420), (190, 114162), (212, 102315), (228, 95135), (265, 81852), (285, 76108), (318, 68210), (359, 60420), (380, 57081), (530, 40926), (570, 38054), (636, 34105), (718, 30210), (795, 27284), (1007, 21540), (1060, 20463), (1077, 20140), (1140, 19027), (1436, 15105), (1590, 13642), (1795, 12084), (2014, 10770), (2154, 10070), (3021, 7180), (3180, 6821), (3590, 6042), (4028, 5385), (4308, 5035)]