19881240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{197}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 62084880

約数和(自身を除く): 42203640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 87, 116, 120, 145, 174, 197, 232, 290, 348, 394, 435, 580, 591, 696, 788, 841, 870, 985, 1160, 1182, 1576, 1682, 1740, 1970, 2364, 2523, 2955, 3364, 3480, 3940, 4205, 4728, 5046, 5713, 5910, 6728, 7880, 8410, 10092, 11426, 11820, 12615, 16820, 17139, 20184, 22852, 23640, 25230, 28565, 33640, 34278, 45704, 50460, 57130, 68556, 85695, 100920, 114260, 137112, 165677, 171390, 228520, 331354, 342780, 497031, 662708, 685560, 828385, 994062, 1325416, 1656770, 1988124, 2485155, 3313540, 3976248, 4970310, 6627080, 9940620, 19881240]

約数ペア:

[(1, 19881240), (2, 9940620), (3, 6627080), (4, 4970310), (5, 3976248), (6, 3313540), (8, 2485155), (10, 1988124), (12, 1656770), (15, 1325416), (20, 994062), (24, 828385), (29, 685560), (30, 662708), (40, 497031), (58, 342780), (60, 331354), (87, 228520), (116, 171390), (120, 165677), (145, 137112), (174, 114260), (197, 100920), (232, 85695), (290, 68556), (348, 57130), (394, 50460), (435, 45704), (580, 34278), (591, 33640), (696, 28565), (788, 25230), (841, 23640), (870, 22852), (985, 20184), (1160, 17139), (1182, 16820), (1576, 12615), (1682, 11820), (1740, 11426), (1970, 10092), (2364, 8410), (2523, 7880), (2955, 6728), (3364, 5910), (3480, 5713), (3940, 5046), (4205, 4728)]