19601920

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 160

約数和(自身を含む): 54996480

約数和(自身を除く): 35394560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 31, 32, 38, 40, 52, 62, 64, 65, 76, 80, 95, 104, 124, 128, 130, 152, 155, 160, 190, 208, 247, 248, 256, 260, 304, 310, 320, 380, 403, 416, 494, 496, 512, 520, 589, 608, 620, 640, 760, 806, 832, 988, 992, 1040, 1178, 1216, 1235, 1240, 1280, 1520, 1612, 1664, 1976, 1984, 2015, 2080, 2356, 2432, 2470, 2480, 2560, 2945, 3040, 3224, 3328, 3952, 3968, 4030, 4160, 4712, 4864, 4940, 4960, 5890, 6080, 6448, 6656, 7657, 7904, 7936, 8060, 8320, 9424, 9728, 9880, 9920, 11780, 12160, 12896, 15314, 15808, 15872, 16120, 16640, 18848, 19760, 19840, 23560, 24320, 25792, 30628, 31616, 32240, 33280, 37696, 38285, 39520, 39680, 47120, 48640, 51584, 61256, 63232, 64480, 75392, 76570, 79040, 79360, 94240, 103168, 122512, 126464, 128960, 150784, 153140, 158080, 188480, 206336, 245024, 257920, 301568, 306280, 316160, 376960, 490048, 515840, 612560, 632320, 753920, 980096, 1031680, 1225120, 1507840, 1960192, 2450240, 3920384, 4900480, 9800960, 19601920]

約数ペア:

[(1, 19601920), (2, 9800960), (4, 4900480), (5, 3920384), (8, 2450240), (10, 1960192), (13, 1507840), (16, 1225120), (19, 1031680), (20, 980096), (26, 753920), (31, 632320), (32, 612560), (38, 515840), (40, 490048), (52, 376960), (62, 316160), (64, 306280), (65, 301568), (76, 257920), (80, 245024), (95, 206336), (104, 188480), (124, 158080), (128, 153140), (130, 150784), (152, 128960), (155, 126464), (160, 122512), (190, 103168), (208, 94240), (247, 79360), (248, 79040), (256, 76570), (260, 75392), (304, 64480), (310, 63232), (320, 61256), (380, 51584), (403, 48640), (416, 47120), (494, 39680), (496, 39520), (512, 38285), (520, 37696), (589, 33280), (608, 32240), (620, 31616), (640, 30628), (760, 25792), (806, 24320), (832, 23560), (988, 19840), (992, 19760), (1040, 18848), (1178, 16640), (1216, 16120), (1235, 15872), (1240, 15808), (1280, 15314), (1520, 12896), (1612, 12160), (1664, 11780), (1976, 9920), (1984, 9880), (2015, 9728), (2080, 9424), (2356, 8320), (2432, 8060), (2470, 7936), (2480, 7904), (2560, 7657), (2945, 6656), (3040, 6448), (3224, 6080), (3328, 5890), (3952, 4960), (3968, 4940), (4030, 4864), (4160, 4712)]