249998980

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{3313}}^1$

素因数の和:3354

約数の個数: 96

約数和(自身を含む): 668102400

約数和(自身を除く): 418103420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 343, 385, 490, 539, 686, 770, 980, 1078, 1372, 1540, 1715, 2156, 2695, 3313, 3430, 3773, 5390, 6626, 6860, 7546, 10780, 13252, 15092, 16565, 18865, 23191, 33130, 36443, 37730, 46382, 66260, 72886, 75460, 92764, 115955, 145772, 162337, 182215, 231910, 255101, 324674, 364430, 463820, 510202, 649348, 728860, 811685, 1020404, 1136359, 1275505, 1623370, 1785707, 2272718, 2551010, 3246740, 3571414, 4545436, 5102020, 5681795, 7142828, 8928535, 11363590, 12499949, 17857070, 22727180, 24999898, 35714140, 49999796, 62499745, 124999490, 249998980]

約数ペア:

[(1, 249998980), (2, 124999490), (4, 62499745), (5, 49999796), (7, 35714140), (10, 24999898), (11, 22727180), (14, 17857070), (20, 12499949), (22, 11363590), (28, 8928535), (35, 7142828), (44, 5681795), (49, 5102020), (55, 4545436), (70, 3571414), (77, 3246740), (98, 2551010), (110, 2272718), (140, 1785707), (154, 1623370), (196, 1275505), (220, 1136359), (245, 1020404), (308, 811685), (343, 728860), (385, 649348), (490, 510202), (539, 463820), (686, 364430), (770, 324674), (980, 255101), (1078, 231910), (1372, 182215), (1540, 162337), (1715, 145772), (2156, 115955), (2695, 92764), (3313, 75460), (3430, 72886), (3773, 66260), (5390, 46382), (6626, 37730), (6860, 36443), (7546, 33130), (10780, 23191), (13252, 18865), (15092, 16565)]