19409920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:265

約数の個数: 88

約数和(自身を含む): 49521024

約数和(自身を除く): 30111104

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 223, 256, 272, 320, 340, 446, 512, 544, 640, 680, 892, 1024, 1088, 1115, 1280, 1360, 1784, 2176, 2230, 2560, 2720, 3568, 3791, 4352, 4460, 5120, 5440, 7136, 7582, 8704, 8920, 10880, 14272, 15164, 17408, 17840, 18955, 21760, 28544, 30328, 35680, 37910, 43520, 57088, 60656, 71360, 75820, 87040, 114176, 121312, 142720, 151640, 228352, 242624, 285440, 303280, 485248, 570880, 606560, 970496, 1141760, 1213120, 1940992, 2426240, 3881984, 4852480, 9704960, 19409920]

約数ペア:

[(1, 19409920), (2, 9704960), (4, 4852480), (5, 3881984), (8, 2426240), (10, 1940992), (16, 1213120), (17, 1141760), (20, 970496), (32, 606560), (34, 570880), (40, 485248), (64, 303280), (68, 285440), (80, 242624), (85, 228352), (128, 151640), (136, 142720), (160, 121312), (170, 114176), (223, 87040), (256, 75820), (272, 71360), (320, 60656), (340, 57088), (446, 43520), (512, 37910), (544, 35680), (640, 30328), (680, 28544), (892, 21760), (1024, 18955), (1088, 17840), (1115, 17408), (1280, 15164), (1360, 14272), (1784, 10880), (2176, 8920), (2230, 8704), (2560, 7582), (2720, 7136), (3568, 5440), (3791, 5120), (4352, 4460)]