18682880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 88

約数和(自身を含む): 46425960

約数和(自身を除く): 27743080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 89, 128, 160, 164, 178, 205, 256, 320, 328, 356, 410, 445, 512, 640, 656, 712, 820, 890, 1024, 1280, 1312, 1424, 1640, 1780, 2560, 2624, 2848, 3280, 3560, 3649, 5120, 5248, 5696, 6560, 7120, 7298, 10496, 11392, 13120, 14240, 14596, 18245, 20992, 22784, 26240, 28480, 29192, 36490, 41984, 45568, 52480, 56960, 58384, 72980, 91136, 104960, 113920, 116768, 145960, 209920, 227840, 233536, 291920, 455680, 467072, 583840, 934144, 1167680, 1868288, 2335360, 3736576, 4670720, 9341440, 18682880]

約数ペア:

[(1, 18682880), (2, 9341440), (4, 4670720), (5, 3736576), (8, 2335360), (10, 1868288), (16, 1167680), (20, 934144), (32, 583840), (40, 467072), (41, 455680), (64, 291920), (80, 233536), (82, 227840), (89, 209920), (128, 145960), (160, 116768), (164, 113920), (178, 104960), (205, 91136), (256, 72980), (320, 58384), (328, 56960), (356, 52480), (410, 45568), (445, 41984), (512, 36490), (640, 29192), (656, 28480), (712, 26240), (820, 22784), (890, 20992), (1024, 18245), (1280, 14596), (1312, 14240), (1424, 13120), (1640, 11392), (1780, 10496), (2560, 7298), (2624, 7120), (2848, 6560), (3280, 5696), (3560, 5248), (3649, 5120)]