16481920

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{283}}^1$

素因数の和:322

約数の個数: 128

約数和(自身を含む): 48666240

約数和(自身を除く): 32184320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 64, 65, 70, 80, 91, 104, 112, 128, 130, 140, 160, 182, 208, 224, 260, 280, 283, 320, 364, 416, 448, 455, 520, 560, 566, 640, 728, 832, 896, 910, 1040, 1120, 1132, 1415, 1456, 1664, 1820, 1981, 2080, 2240, 2264, 2830, 2912, 3640, 3679, 3962, 4160, 4480, 4528, 5660, 5824, 7280, 7358, 7924, 8320, 9056, 9905, 11320, 11648, 14560, 14716, 15848, 18112, 18395, 19810, 22640, 25753, 29120, 29432, 31696, 36224, 36790, 39620, 45280, 51506, 58240, 58864, 63392, 73580, 79240, 90560, 103012, 117728, 126784, 128765, 147160, 158480, 181120, 206024, 235456, 253568, 257530, 294320, 316960, 412048, 470912, 515060, 588640, 633920, 824096, 1030120, 1177280, 1267840, 1648192, 2060240, 2354560, 3296384, 4120480, 8240960, 16481920]

約数ペア:

[(1, 16481920), (2, 8240960), (4, 4120480), (5, 3296384), (7, 2354560), (8, 2060240), (10, 1648192), (13, 1267840), (14, 1177280), (16, 1030120), (20, 824096), (26, 633920), (28, 588640), (32, 515060), (35, 470912), (40, 412048), (52, 316960), (56, 294320), (64, 257530), (65, 253568), (70, 235456), (80, 206024), (91, 181120), (104, 158480), (112, 147160), (128, 128765), (130, 126784), (140, 117728), (160, 103012), (182, 90560), (208, 79240), (224, 73580), (260, 63392), (280, 58864), (283, 58240), (320, 51506), (364, 45280), (416, 39620), (448, 36790), (455, 36224), (520, 31696), (560, 29432), (566, 29120), (640, 25753), (728, 22640), (832, 19810), (896, 18395), (910, 18112), (1040, 15848), (1120, 14716), (1132, 14560), (1415, 11648), (1456, 11320), (1664, 9905), (1820, 9056), (1981, 8320), (2080, 7924), (2240, 7358), (2264, 7280), (2830, 5824), (2912, 5660), (3640, 4528), (3679, 4480), (3962, 4160)]