16781940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{701}}^1$

素因数の和:742

約数の個数: 144

約数和(自身を含む): 61326720

約数和(自身を除く): 44544780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 701, 798, 855, 1140, 1197, 1260, 1330, 1402, 1596, 1710, 1995, 2103, 2394, 2660, 2804, 3420, 3505, 3990, 4206, 4788, 4907, 5985, 6309, 7010, 7980, 8412, 9814, 10515, 11970, 12618, 13319, 14020, 14721, 19628, 21030, 23940, 24535, 25236, 26638, 29442, 31545, 39957, 42060, 44163, 49070, 53276, 58884, 63090, 66595, 73605, 79914, 88326, 93233, 98140, 119871, 126180, 133190, 147210, 159828, 176652, 186466, 199785, 220815, 239742, 266380, 279699, 294420, 372932, 399570, 441630, 466165, 479484, 559398, 599355, 799140, 839097, 883260, 932330, 1118796, 1198710, 1398495, 1678194, 1864660, 2397420, 2796990, 3356388, 4195485, 5593980, 8390970, 16781940]

約数ペア:

[(1, 16781940), (2, 8390970), (3, 5593980), (4, 4195485), (5, 3356388), (6, 2796990), (7, 2397420), (9, 1864660), (10, 1678194), (12, 1398495), (14, 1198710), (15, 1118796), (18, 932330), (19, 883260), (20, 839097), (21, 799140), (28, 599355), (30, 559398), (35, 479484), (36, 466165), (38, 441630), (42, 399570), (45, 372932), (57, 294420), (60, 279699), (63, 266380), (70, 239742), (76, 220815), (84, 199785), (90, 186466), (95, 176652), (105, 159828), (114, 147210), (126, 133190), (133, 126180), (140, 119871), (171, 98140), (180, 93233), (190, 88326), (210, 79914), (228, 73605), (252, 66595), (266, 63090), (285, 58884), (315, 53276), (342, 49070), (380, 44163), (399, 42060), (420, 39957), (532, 31545), (570, 29442), (630, 26638), (665, 25236), (684, 24535), (701, 23940), (798, 21030), (855, 19628), (1140, 14721), (1197, 14020), (1260, 13319), (1330, 12618), (1402, 11970), (1596, 10515), (1710, 9814), (1995, 8412), (2103, 7980), (2394, 7010), (2660, 6309), (2804, 5985), (3420, 4907), (3505, 4788), (3990, 4206)]