209938820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^2$

素因数の和:182

約数の個数: 144

約数和(自身を含む): 569447424

約数和(自身を除く): 359508604

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 61, 62, 65, 70, 91, 122, 124, 130, 140, 155, 182, 217, 244, 260, 305, 310, 364, 403, 427, 434, 455, 610, 620, 793, 806, 854, 868, 910, 1085, 1220, 1586, 1612, 1708, 1820, 1891, 2015, 2135, 2170, 2821, 3172, 3721, 3782, 3965, 4030, 4270, 4340, 5551, 5642, 7442, 7564, 7930, 8060, 8540, 9455, 11102, 11284, 13237, 14105, 14884, 15860, 18605, 18910, 22204, 24583, 26047, 26474, 27755, 28210, 37210, 37820, 48373, 49166, 52094, 52948, 55510, 56420, 66185, 74420, 96746, 98332, 104188, 111020, 115351, 122915, 130235, 132370, 172081, 193492, 230702, 241865, 245830, 260470, 264740, 338611, 344162, 461404, 483730, 491660, 520940, 576755, 677222, 688324, 807457, 860405, 967460, 1153510, 1354444, 1499563, 1614914, 1693055, 1720810, 2307020, 2999126, 3229828, 3386110, 3441620, 4037285, 5998252, 6772220, 7497815, 8074570, 10496941, 14995630, 16149140, 20993882, 29991260, 41987764, 52484705, 104969410, 209938820]

約数ペア:

[(1, 209938820), (2, 104969410), (4, 52484705), (5, 41987764), (7, 29991260), (10, 20993882), (13, 16149140), (14, 14995630), (20, 10496941), (26, 8074570), (28, 7497815), (31, 6772220), (35, 5998252), (52, 4037285), (61, 3441620), (62, 3386110), (65, 3229828), (70, 2999126), (91, 2307020), (122, 1720810), (124, 1693055), (130, 1614914), (140, 1499563), (155, 1354444), (182, 1153510), (217, 967460), (244, 860405), (260, 807457), (305, 688324), (310, 677222), (364, 576755), (403, 520940), (427, 491660), (434, 483730), (455, 461404), (610, 344162), (620, 338611), (793, 264740), (806, 260470), (854, 245830), (868, 241865), (910, 230702), (1085, 193492), (1220, 172081), (1586, 132370), (1612, 130235), (1708, 122915), (1820, 115351), (1891, 111020), (2015, 104188), (2135, 98332), (2170, 96746), (2821, 74420), (3172, 66185), (3721, 56420), (3782, 55510), (3965, 52948), (4030, 52094), (4270, 49166), (4340, 48373), (5551, 37820), (5642, 37210), (7442, 28210), (7564, 27755), (7930, 26474), (8060, 26047), (8540, 24583), (9455, 22204), (11102, 18910), (11284, 18605), (13237, 15860), (14105, 14884)]