421479280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1861}}^1$

素因数の和:2042

約数の個数: 80

約数和(自身を含む): 1038996000

約数和(自身を除く): 617516720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 149, 152, 190, 298, 304, 380, 596, 745, 760, 1192, 1490, 1520, 1861, 2384, 2831, 2980, 3722, 5662, 5960, 7444, 9305, 11324, 11920, 14155, 14888, 18610, 22648, 28310, 29776, 35359, 37220, 45296, 56620, 70718, 74440, 113240, 141436, 148880, 176795, 226480, 277289, 282872, 353590, 554578, 565744, 707180, 1109156, 1386445, 1414360, 2218312, 2772890, 2828720, 4436624, 5268491, 5545780, 10536982, 11091560, 21073964, 22183120, 26342455, 42147928, 52684910, 84295856, 105369820, 210739640, 421479280]

約数ペア:

[(1, 421479280), (2, 210739640), (4, 105369820), (5, 84295856), (8, 52684910), (10, 42147928), (16, 26342455), (19, 22183120), (20, 21073964), (38, 11091560), (40, 10536982), (76, 5545780), (80, 5268491), (95, 4436624), (149, 2828720), (152, 2772890), (190, 2218312), (298, 1414360), (304, 1386445), (380, 1109156), (596, 707180), (745, 565744), (760, 554578), (1192, 353590), (1490, 282872), (1520, 277289), (1861, 226480), (2384, 176795), (2831, 148880), (2980, 141436), (3722, 113240), (5662, 74440), (5960, 70718), (7444, 56620), (9305, 45296), (11324, 37220), (11920, 35359), (14155, 29776), (14888, 28310), (18610, 22648)]