19681650

素因数分解:

$2^1\times 3^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 55353600

約数和(自身を除く): 35671950

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 45, 50, 54, 61, 75, 90, 122, 135, 150, 183, 225, 239, 270, 305, 366, 450, 478, 549, 610, 675, 717, 915, 1098, 1195, 1350, 1434, 1525, 1647, 1830, 2151, 2390, 2745, 3050, 3294, 3585, 4302, 4575, 5490, 5975, 6453, 7170, 8235, 9150, 10755, 11950, 12906, 13725, 14579, 16470, 17925, 21510, 27450, 29158, 32265, 35850, 41175, 43737, 53775, 64530, 72895, 82350, 87474, 107550, 131211, 145790, 161325, 218685, 262422, 322650, 364475, 393633, 437370, 656055, 728950, 787266, 1093425, 1312110, 1968165, 2186850, 3280275, 3936330, 6560550, 9840825, 19681650]

約数ペア:

[(1, 19681650), (2, 9840825), (3, 6560550), (5, 3936330), (6, 3280275), (9, 2186850), (10, 1968165), (15, 1312110), (18, 1093425), (25, 787266), (27, 728950), (30, 656055), (45, 437370), (50, 393633), (54, 364475), (61, 322650), (75, 262422), (90, 218685), (122, 161325), (135, 145790), (150, 131211), (183, 107550), (225, 87474), (239, 82350), (270, 72895), (305, 64530), (366, 53775), (450, 43737), (478, 41175), (549, 35850), (610, 32265), (675, 29158), (717, 27450), (915, 21510), (1098, 17925), (1195, 16470), (1350, 14579), (1434, 13725), (1525, 12906), (1647, 11950), (1830, 10755), (2151, 9150), (2390, 8235), (2745, 7170), (3050, 6453), (3294, 5975), (3585, 5490), (4302, 4575)]