251336560

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:219

約数の個数: 160

約数和(自身を含む): 653083200

約数和(自身を除く): 401746640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 37, 38, 40, 41, 74, 76, 80, 82, 95, 109, 148, 152, 164, 185, 190, 205, 218, 296, 304, 328, 370, 380, 410, 436, 545, 592, 656, 703, 740, 760, 779, 820, 872, 1090, 1406, 1480, 1517, 1520, 1558, 1640, 1744, 2071, 2180, 2812, 2960, 3034, 3116, 3280, 3515, 3895, 4033, 4142, 4360, 4469, 5624, 6068, 6232, 7030, 7585, 7790, 8066, 8284, 8720, 8938, 10355, 11248, 12136, 12464, 14060, 15170, 15580, 16132, 16568, 17876, 20165, 20710, 22345, 24272, 28120, 28823, 30340, 31160, 32264, 33136, 35752, 40330, 41420, 44690, 56240, 57646, 60680, 62320, 64528, 71504, 76627, 80660, 82840, 84911, 89380, 115292, 121360, 144115, 153254, 161320, 165353, 165680, 169822, 178760, 230584, 288230, 306508, 322640, 330706, 339644, 357520, 383135, 424555, 461168, 576460, 613016, 661412, 679288, 766270, 826765, 849110, 1152920, 1226032, 1322824, 1358576, 1532540, 1653530, 1698220, 2305840, 2645648, 3065080, 3141707, 3307060, 3396440, 6130160, 6283414, 6614120, 6792880, 12566828, 13228240, 15708535, 25133656, 31417070, 50267312, 62834140, 125668280, 251336560]

約数ペア:

[(1, 251336560), (2, 125668280), (4, 62834140), (5, 50267312), (8, 31417070), (10, 25133656), (16, 15708535), (19, 13228240), (20, 12566828), (37, 6792880), (38, 6614120), (40, 6283414), (41, 6130160), (74, 3396440), (76, 3307060), (80, 3141707), (82, 3065080), (95, 2645648), (109, 2305840), (148, 1698220), (152, 1653530), (164, 1532540), (185, 1358576), (190, 1322824), (205, 1226032), (218, 1152920), (296, 849110), (304, 826765), (328, 766270), (370, 679288), (380, 661412), (410, 613016), (436, 576460), (545, 461168), (592, 424555), (656, 383135), (703, 357520), (740, 339644), (760, 330706), (779, 322640), (820, 306508), (872, 288230), (1090, 230584), (1406, 178760), (1480, 169822), (1517, 165680), (1520, 165353), (1558, 161320), (1640, 153254), (1744, 144115), (2071, 121360), (2180, 115292), (2812, 89380), (2960, 84911), (3034, 82840), (3116, 80660), (3280, 76627), (3515, 71504), (3895, 64528), (4033, 62320), (4142, 60680), (4360, 57646), (4469, 56240), (5624, 44690), (6068, 41420), (6232, 40330), (7030, 35752), (7585, 33136), (7790, 32264), (8066, 31160), (8284, 30340), (8720, 28823), (8938, 28120), (10355, 24272), (11248, 22345), (12136, 20710), (12464, 20165), (14060, 17876), (15170, 16568), (15580, 16132)]