990638720

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1987}}^1$

素因数の和:2066

約数の個数: 128

約数和(自身を含む): 2554977600

約数和(自身を除く): 1564338880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 41, 64, 76, 80, 82, 95, 128, 152, 160, 164, 190, 205, 304, 320, 328, 380, 410, 608, 640, 656, 760, 779, 820, 1216, 1312, 1520, 1558, 1640, 1987, 2432, 2624, 3040, 3116, 3280, 3895, 3974, 5248, 6080, 6232, 6560, 7790, 7948, 9935, 12160, 12464, 13120, 15580, 15896, 19870, 24928, 26240, 31160, 31792, 37753, 39740, 49856, 62320, 63584, 75506, 79480, 81467, 99712, 124640, 127168, 151012, 158960, 162934, 188765, 249280, 254336, 302024, 317920, 325868, 377530, 407335, 498560, 604048, 635840, 651736, 755060, 814670, 1208096, 1271680, 1303472, 1510120, 1547873, 1629340, 2416192, 2606944, 3020240, 3095746, 3258680, 4832384, 5213888, 6040480, 6191492, 6517360, 7739365, 10427776, 12080960, 12382984, 13034720, 15478730, 24161920, 24765968, 26069440, 30957460, 49531936, 52138880, 61914920, 99063872, 123829840, 198127744, 247659680, 495319360, 990638720]

約数ペア:

[(1, 990638720), (2, 495319360), (4, 247659680), (5, 198127744), (8, 123829840), (10, 99063872), (16, 61914920), (19, 52138880), (20, 49531936), (32, 30957460), (38, 26069440), (40, 24765968), (41, 24161920), (64, 15478730), (76, 13034720), (80, 12382984), (82, 12080960), (95, 10427776), (128, 7739365), (152, 6517360), (160, 6191492), (164, 6040480), (190, 5213888), (205, 4832384), (304, 3258680), (320, 3095746), (328, 3020240), (380, 2606944), (410, 2416192), (608, 1629340), (640, 1547873), (656, 1510120), (760, 1303472), (779, 1271680), (820, 1208096), (1216, 814670), (1312, 755060), (1520, 651736), (1558, 635840), (1640, 604048), (1987, 498560), (2432, 407335), (2624, 377530), (3040, 325868), (3116, 317920), (3280, 302024), (3895, 254336), (3974, 249280), (5248, 188765), (6080, 162934), (6232, 158960), (6560, 151012), (7790, 127168), (7948, 124640), (9935, 99712), (12160, 81467), (12464, 79480), (13120, 75506), (15580, 63584), (15896, 62320), (19870, 49856), (24928, 39740), (26240, 37753), (31160, 31792)]