19947720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{673}}^1$

素因数の和:719

約数の個数: 128

約数和(自身を含む): 67939200

約数和(自身を除く): 47991480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 190, 195, 228, 247, 260, 285, 312, 380, 390, 456, 494, 520, 570, 673, 741, 760, 780, 988, 1140, 1235, 1346, 1482, 1560, 1976, 2019, 2280, 2470, 2692, 2964, 3365, 3705, 4038, 4940, 5384, 5928, 6730, 7410, 8076, 8749, 9880, 10095, 12787, 13460, 14820, 16152, 17498, 20190, 25574, 26247, 26920, 29640, 34996, 38361, 40380, 43745, 51148, 52494, 63935, 69992, 76722, 80760, 87490, 102296, 104988, 127870, 131235, 153444, 166231, 174980, 191805, 209976, 255740, 262470, 306888, 332462, 349960, 383610, 498693, 511480, 524940, 664924, 767220, 831155, 997386, 1049880, 1329848, 1534440, 1662310, 1994772, 2493465, 3324620, 3989544, 4986930, 6649240, 9973860, 19947720]

約数ペア:

[(1, 19947720), (2, 9973860), (3, 6649240), (4, 4986930), (5, 3989544), (6, 3324620), (8, 2493465), (10, 1994772), (12, 1662310), (13, 1534440), (15, 1329848), (19, 1049880), (20, 997386), (24, 831155), (26, 767220), (30, 664924), (38, 524940), (39, 511480), (40, 498693), (52, 383610), (57, 349960), (60, 332462), (65, 306888), (76, 262470), (78, 255740), (95, 209976), (104, 191805), (114, 174980), (120, 166231), (130, 153444), (152, 131235), (156, 127870), (190, 104988), (195, 102296), (228, 87490), (247, 80760), (260, 76722), (285, 69992), (312, 63935), (380, 52494), (390, 51148), (456, 43745), (494, 40380), (520, 38361), (570, 34996), (673, 29640), (741, 26920), (760, 26247), (780, 25574), (988, 20190), (1140, 17498), (1235, 16152), (1346, 14820), (1482, 13460), (1560, 12787), (1976, 10095), (2019, 9880), (2280, 8749), (2470, 8076), (2692, 7410), (2964, 6730), (3365, 5928), (3705, 5384), (4038, 4940)]