210661920

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{20899}}^1$

素因数の和:20927

約数の個数: 144

約数和(自身を含む): 821620800

約数和(自身を除く): 610958880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 20899, 41798, 62697, 83596, 104495, 125394, 146293, 167192, 188091, 208990, 250788, 292586, 313485, 334384, 376182, 417980, 438879, 501576, 585172, 626970, 668768, 731465, 752364, 835960, 877758, 940455, 1003152, 1170344, 1253940, 1316637, 1462930, 1504728, 1671920, 1755516, 1880910, 2006304, 2194395, 2340688, 2507880, 2633274, 2925860, 3009456, 3343840, 3511032, 3761820, 4388790, 4681376, 5015760, 5266548, 5851720, 6018912, 6583185, 7022064, 7523640, 8777580, 10031520, 10533096, 11703440, 13166370, 14044128, 15047280, 17555160, 21066192, 23406880, 26332740, 30094560, 35110320, 42132384, 52665480, 70220640, 105330960, 210661920]

約数ペア:

[(1, 210661920), (2, 105330960), (3, 70220640), (4, 52665480), (5, 42132384), (6, 35110320), (7, 30094560), (8, 26332740), (9, 23406880), (10, 21066192), (12, 17555160), (14, 15047280), (15, 14044128), (16, 13166370), (18, 11703440), (20, 10533096), (21, 10031520), (24, 8777580), (28, 7523640), (30, 7022064), (32, 6583185), (35, 6018912), (36, 5851720), (40, 5266548), (42, 5015760), (45, 4681376), (48, 4388790), (56, 3761820), (60, 3511032), (63, 3343840), (70, 3009456), (72, 2925860), (80, 2633274), (84, 2507880), (90, 2340688), (96, 2194395), (105, 2006304), (112, 1880910), (120, 1755516), (126, 1671920), (140, 1504728), (144, 1462930), (160, 1316637), (168, 1253940), (180, 1170344), (210, 1003152), (224, 940455), (240, 877758), (252, 835960), (280, 752364), (288, 731465), (315, 668768), (336, 626970), (360, 585172), (420, 501576), (480, 438879), (504, 417980), (560, 376182), (630, 334384), (672, 313485), (720, 292586), (840, 250788), (1008, 208990), (1120, 188091), (1260, 167192), (1440, 146293), (1680, 125394), (2016, 104495), (2520, 83596), (3360, 62697), (5040, 41798), (10080, 20899)]