123389440

素因数分解:

$2^9\times 5^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:487

約数の個数: 80

約数和(自身を含む): 298699632

約数和(自身を除く): 175310192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 307, 314, 320, 512, 614, 628, 640, 785, 1228, 1256, 1280, 1535, 1570, 2456, 2512, 2560, 3070, 3140, 4912, 5024, 6140, 6280, 9824, 10048, 12280, 12560, 19648, 20096, 24560, 25120, 39296, 40192, 48199, 49120, 50240, 78592, 80384, 96398, 98240, 100480, 157184, 192796, 196480, 200960, 240995, 385592, 392960, 401920, 481990, 771184, 785920, 963980, 1542368, 1927960, 3084736, 3855920, 6169472, 7711840, 12338944, 15423680, 24677888, 30847360, 61694720, 123389440]

約数ペア:

[(1, 123389440), (2, 61694720), (4, 30847360), (5, 24677888), (8, 15423680), (10, 12338944), (16, 7711840), (20, 6169472), (32, 3855920), (40, 3084736), (64, 1927960), (80, 1542368), (128, 963980), (157, 785920), (160, 771184), (256, 481990), (307, 401920), (314, 392960), (320, 385592), (512, 240995), (614, 200960), (628, 196480), (640, 192796), (785, 157184), (1228, 100480), (1256, 98240), (1280, 96398), (1535, 80384), (1570, 78592), (2456, 50240), (2512, 49120), (2560, 48199), (3070, 40192), (3140, 39296), (4912, 25120), (5024, 24560), (6140, 20096), (6280, 19648), (9824, 12560), (10048, 12280)]